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intelligentlife
Noaidi



Registered: 10/18/10
Posts: 2,627
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Trichocereus sp cactus cold hardiness dialog and questions.
#18909924 - 09/30/13 04:02 AM (10 years, 4 months ago) |
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Hello cactus enthusiasts.
Last summer was my first summer I have grow cacti in greenhouse northern than arctic circle. I has been little cautious with cacti cause my climate makes even greenhouse temperatures at night below +10C easily at growth season.. I have not seen any rotting or anything else but however, I am not want to risk my cactus to get too cold.
My climate can be hard to understand to most of people, With cactus in greenhouse I can keep them without heater only at June and July months.. If "bad summer" comes, these months can be very cold with day temperatures drop down to +5-8C if wind comes from arctic sea and also if it's cloudy, greenhouse doesn't heat up itself..
I wan't to actually hear regular pachanoi, peruviana, bridgesi and another else cold hardiness during growth season when soil is wet after watering and danger of near +0C nights are present. At May and August I have to use heaters at night to make sure night frosts doesn't kill plants so I need caution and don't have much experience with greenhouse cultivation.
Actually I want to talk about this, when I can success day temperatures +30-35C or more but still night temperatures can drop down to +5-10C and last about 6hours.. Coldest period at summer at 3-4AM local time and temperatures outdoors vary from +25-30C day to +5-10C nights.. When it's cloudy, there are cool days and about same temperature nights.
So my worry about the cactus plants is the cold night what is normal in my climate, this summer June-July time period was +10-15C night temps at greenhouse so it wasn't bad but month ago was hit the first frosts at morning was -5.2C and after that night I move cacti indoors and used heater and later move chili plants also indoors, cucumber and tomatoes I let them die cause sun amount is getting shorter.
So I have possibility to 3-4months(maybe max 5months) with heater to keep cact plants outdoors in greenhouse and cause this summer was my first with trichocereus and another plants in greenhouse, I have not lost any plants still to cold nights but you guys who grow outdoors trichos and so on, what is the regular night temperature you have in your climate?
I need to talk about that cause I build new greenhouse only for cacti and I have to plan it good to keep it warm during the night cause local climate is unpredictable with night temperatures drop always low even day temperatures isn't bad for cactus. Also tomato cultivation doesn't produce good harvest, I cannot control the warm nights for tomato plant so I will not grow it next year.
Still I want to know much about different climate growers, how cold your nights are for your trichocereus plants? Can I keep my trichos as watered and fertilized outdoors in greenhouse without worry of they got cold cause day temperatures are always above +20C, at sunny day it's more likely +30-40C.. Does trichocereus species takes "bad" about the very dramatic change of temperatures what my plants have to endure the time when I keep them outdoors in greenhouse.. And about that, I know they can grow up to 3000meter above sea level so I think there are actually very chilly cold nights and warm hot days? So is this good for trichocereus that temperature change is very dramatic.. Actually one grafted ortegocactus macdougallii with trichocereus as stock rotted cause of these chilly nights, Trichocereus has seem to do fine but I have been cautious but do I have been too cautious about temperature change?
Last summer in greenhouse was VERY CHILLY about +3C temperature at 9AM when I went to look them, they got sun after 10AM at the greenhouse where is it now, should I build my new greenhouse to place where sun starts to shine probably very early at 5AM or so to stop the chilling temperature and get temperatures rising.
I have not find about growth season cold hardiness information about trichocereus and yet still I have not find about anything growing cactus at north of arctic circle in greenhouse so I have to get your guys data about your temperatures at night and morning, how fast your temperatures rise at morning and how cool night your trichocereus plants endure at growing season?
This is question what has been on my mind and can't find answers without testing my self but your guys knowledge how cold nights trichocereus can endure over the growth season has value to me. There is about 1/3 of the whole 24hour day cool and possible cold time period when rest of the day can be indeed +30C if it's good summer weather.. Regular I know the +15-20C summer days are normal if it's cold day but +30C is not impossible, still nights are cool, very cool sometimes.
Cause this cacti species are from andes, and growing at very high altitudes, is this just normal than at day time sun heats them to +30-40C and night are really chilly and cold, is that kind of climate actually "normal" to tirchocereus at growth season.
Only information about cold hardiness is the winter season with trichocereus bu hard to find information I can use for good to grow cacti in greenhouse without worries of cool nights.. At summer growth season night temperatures is not informed about anything so I need to know your guys environment data.. Night temperatures especially and how long the cold nights lasts before day heat comes? I have not dare to water so much my trichos at summer and watered only at morning when it's hot day ahead.. My concern is the cold nights, how cold night can be at growing season? Does it matter if night temperatures goes somewhere +5C at growing season when still day temperatures keeps climing up to +20-40C every day? Is that dramatic temperature change actually good cause as far as I understand in the high of andes there are cold cool nights and hot days so am I worry too much? Should I still build greenhouse to get morning sun warming the greenhouse as fast as possible to warm up the cold period of the day? Now the cold cool air says in greenhouse about 10hours cause forest blocks the morning sun and prevent early heating.
Let's talk about cold hardiness of growth season. How about sudden frosts at growth season can effect the plant or do the frost and cold needs to be lasting days before it causes damage?
I think I am only one who grows cacti so far north and do greenhouse growing also at summer when it's possible.
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intelligentlife
Noaidi



Registered: 10/18/10
Posts: 2,627
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: intelligentlife]
#18913683 - 09/30/13 10:42 PM (10 years, 4 months ago) |
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No one has knowledge of cold hardiness of trichocereus species at growth season?
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aussieshroomer1
Stranger

Registered: 12/02/12
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: intelligentlife]
#18914470 - 10/01/13 03:01 AM (10 years, 4 months ago) |
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nope but i just planted some cacti
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Junkheadrev
The River Doctor


Registered: 11/07/11
Posts: 251
Loc: New Arizona
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: aussieshroomer1]
#18914805 - 10/01/13 06:43 AM (10 years, 4 months ago) |
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I know The American PC clone is hardy to 20°f (-6°c) if they are mature plants , but the possibility of a damaged tip is always there. However NON PC Pachanoi are said to be less tolerant to cold and I bring my non PC into my garage in the winter so I'm not sure what the hardiness is for real pachanoi. I have a few Peruvianus that survived 10+ hours of 30°f (-1°c) before i brought them in. I never leave my bridgesii or scopulicola outside so i cant tell you the hardiness of those species either . My pach x peru hybrid , spachianus, terscheckii, kk339 ,werdermanianus, and uyupampensis weren't effected by hours of a cold snap that went from about 50°f to freezing. Hope that helps a little.
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intelligentlife
Noaidi



Registered: 10/18/10
Posts: 2,627
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: Junkheadrev]
#18915064 - 10/01/13 08:39 AM (10 years, 4 months ago) |
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So I possible have to use heater and thermo adjusted to minimum night temps of +7-10C?
I have with heater possibility to grow 4months cacti in grenhouse, rest of the time they need to be at windwosill with artificial lights.
I am thinking the next spring and summer, summer can be very short or very long, very humid or very dry.. Unpredictable summers there and night temps always can drop near zero for few hours.
So I planned to put the greenhouse to the place where it got as early as 4-5AM sun shine to get warm up over the cold 3-4AM periods. Even sun is shining at midnight problem is still it's not shine so high up in the sky and it shines from north.. Possible first sunshine to greenhouse in my climate would be good when I plan it to spot where they got first morning sun to heat greenhouse fast up.
Usually it's long time till 10-11AM before sun is starting to heat my greenhouse at summer and I am now building another one so I need to figure out another location to get sun heating greenhouse as early as possible.
For the safety reasons even few hours temps can drop even to +0C at summer nights, I possible use heater adjusted to keep at least +10C..
Also I need to make my isolation to greenhouse better so heat doesn't go away so fast.
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420milehigh
shaman


Registered: 08/19/12
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: intelligentlife]
#18915417 - 10/01/13 10:16 AM (10 years, 4 months ago) |
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if you build a greenhouse that's attached to your house and has a couple windows on the area of the house that is connected to it, then you can just leave the windows open a little and it should help regulate the temps in there.... just make sure the green house is sealed tight without drafts
-------------------- All posts are entirely, 100%, conclusively false or complete works of fiction... but I can levitate lol "Any fool can criticize, condemn and complain and most fools do." Benjamin Franklin if I owe you seeds from a previous trade send me a PM, I will rectify my shortcomings and compensate you for your patience
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intelligentlife
Noaidi



Registered: 10/18/10
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: 420milehigh]
#18915880 - 10/01/13 12:08 PM (10 years, 4 months ago) |
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Quote:
420milehigh said: if you build a greenhouse that's attached to your house and has a couple windows on the area of the house that is connected to it, then you can just leave the windows open a little and it should help regulate the temps in there.... just make sure the green house is sealed tight without drafts
It's not possible in my climate.. Cold climate building and houses are different than most of the world houses so I cannot attach the greenhouse to house, also I need my window to grow cacti over spring and fall.
I have already whole frame and at spring I build the plastic to it, I can move it at the moment and build it above the concrete block. Heating should be with electricity and use somekind of thermostate to keep heat +10C if cold nights hit hard at summer.. I can't be on watch every time greenhouse and it's waste of house warming to build greenhouse attached to house.
You should know I am norther than arctic circle, houses in there walls are very thick and properly done, also heat keeping inside the house is major thing. Even at 4month time growing cactus at greenhouse, first and last months I have risk to get in worst case -5C or at spring even -15C frosts can hit at beginning of may at night time even day are above zero.
Similar problem is at summer cause temps drop very fast and change. Even greenhouse help summer to keep day heat high enough, cooling down during the night is the problem still even at summer cause temperatures can change inside greenhouse from +35C day to +5C night.
This is my climate over year average diagram:

Eve it seems 4months is "easy" night frosts makes even native plants hard and shorten the growth time.
This summer has been unusually long instead and there has been measured temperature records never so high this far north but higher the temperatures are at day when it's no clouds cooler the nights are. At winter high pressure air is always very cold frosts, instead low pressure cloudy days are not so cold. However, spring and fall time are tricky cause day can be +20C and night can be -10C.. So sudden cold shocks at spring or fall prevents me to keep plants in greenhouse so windowsill with effective lights above it is necessary to grow cacti.
I have never kept lophophora or ariocarpus in greenhouse except one small caespitosa I have kept by test in greenhouse but condensation during the night is always present and temperature changes are tricky even at summer but frosts are rare, still cold are common at night..
Summer or 2013, I kept all the time some trichos from May to first of august when -5.2C frosts hit I get them inside. T. pachanoi(I have no PC Pachanois) I have not kept so long time greenhouse but my test cactus subjects has survived okay and May I used heater at night time cause cold frost nights, electric fan heater works fight against night frosts. My "test" subjects was t. terscheckii, t. pasacana, opuntia robusta, some crested cereus, and gymnocaliucym sp. Only sun burs was problem at spring. I have no pest problem actually cause my greenhouse and cactus plants crawling spiders and native spiders like to hunt in greenhouse..
I probably have to try push the limits of plants to find out, but when I get my trichos bigger like 1 meter columns, I am sure they can survive the cold nights more better than some of my plants now, still some plants are too valuable to even keep at greenhouse cause I possible never got another same clones or species back.. Also lophophora are too expensive to try to push the limits of them and they are comfortable to spent their whole life indoors.
Next summer I know more but season is very fking short in greenhouse for cactus plants still.. but I like it cause the appearance comes very nice when they got direct sun light.
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TheFourthEyE
explorer



Registered: 07/11/12
Posts: 610
Loc: South africa
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: intelligentlife]
#18915943 - 10/01/13 12:25 PM (10 years, 4 months ago) |
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haha intelligentlife, your usually the one answering all the cacti related questions, not asking them i wish i could help you for once but, unfortunately not this time.
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dankie vir die tyd geneem het om dit te vertaal
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420milehigh
shaman


Registered: 08/19/12
Posts: 1,229
Loc: third eye
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: intelligentlife]
#18916279 - 10/01/13 01:35 PM (10 years, 4 months ago) |
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that's insanely cold, I like winter but holy hell man... well scratch that idea.... sorry man, I wish I could help ya out but I'm at a loss on this one...
I have seen people use composting along walls of greenhouse which causes warming naturally, but it might not work with your extreme environment...
-------------------- All posts are entirely, 100%, conclusively false or complete works of fiction... but I can levitate lol "Any fool can criticize, condemn and complain and most fools do." Benjamin Franklin if I owe you seeds from a previous trade send me a PM, I will rectify my shortcomings and compensate you for your patience
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Corporal Kielbasa


Registered: 05/29/04
Posts: 17,235
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: intelligentlife]
#18917804 - 10/01/13 07:05 PM (10 years, 4 months ago) |
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I'd make the cold side as thick and insulated as possible. Something that can store the heat in thermal mass. I'd add heating cables to the soil if doing raised beds or heat strips for tabletops. I'd add a heater and thermostat and hope for no power outages. No real experience with arctic winters . Here is a good blog on cold hardiness link
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ferrel_human
stone eater



Registered: 06/26/09
Posts: 16,347
Loc: Texas
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: Corporal Kielbasa]
#18917882 - 10/01/13 07:22 PM (10 years, 4 months ago) |
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I usually leave everything outside unless its a really hard freeze but I am from deep south sub-tropical south texas so it rarely happens. I know some cacti in Mexican deserts at night there is frost. As for trichocereus I would try and buy some type of heater because as everyone knows cold and wet will kill most cactI. I talk from experience as my collection is of good size it used to be bigger.
Intelligent life you have taken on a daunting task of growing cacti in the most bleakest of places. You should try and contact the guy from lophophora blogspot. He grows in denmark I believe and has certain cacti that have been frozen but survived. Not all of them did but some. He grows peyote as well as trichocereus.
-------------------- Nature is my church and walking through it is gospel. It tells no lies and reveals all to those who look, and listen, closely. -Karode
 Looking for Mimosa tenuiflora seeds. Buttons for trade
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intelligentlife
Noaidi



Registered: 10/18/10
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: ferrel_human]
#18918998 - 10/01/13 11:27 PM (10 years, 4 months ago) |
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There is normal to grow food crop and arctic decoration plants in greenhouse. Cacti as well.
These are what I paste average temperatures an summers are quite okay but too short.. As fast as summer goes, it's fade away when fall comes. I know more colder climate growers than that guy from denmark..
difference is that even denmark outdoors environment are very different to my, even it's only ~1400kilometers away but more north you go, more extreme changes the weather gets. For example apple trees doen't grow there but at south parts of my country like 700km away, they are growing very well and produce good harvest. Also small flora are different.
Warming atlantic current doesn't heat up the place I live so much than it heats denmark and few other european countries near it. I could ask him and I have look his blog.. I have tried different exotic plants in greenhouse and it's actually makes environment very different, even chili plants like to be in greenhouse and they are known to be not so cold hard, they has tolerate all the cold chilly nights over summer.
Still month ago was sudden -5.2C morning, I get chili and cacti indoors and after that there has been +2-3C nights as well as days.
I have come to solution that I use electric heating and several layers of plastic what light penetrates.. I have been in school at building industry so I know cold climate building, also I have build houses, greenhouse needs to be build more wall with isolation and above light penetrating plastic with two layers to make heat stay in the greenhouse. Two layers of greenhouse plastic or something help lots and air between them prevents cooling the greenhouse lots.
My coming cacti and chili greenhouse have 2inch(5cm) thick walls, I can be use two layer plastic to ensure heat staying indoors. More layers = more effect with keeping heat inside. for example our house walls are 8-10inch thick and isolated. Also floor and roof building is different than warm climate building. I probably use polystyrene boards to use isolation and make isolated walls somewhere and half of the wall I make "normal wall" with isolation to reduce surface what let heat goes away.
I need to figure out this.. Atleast this summer some big trichos and opuntia and also few cobulars endure good the chilly nights and hot days with soil wet and cacti plants full of water.
Well. I have whole winter time to think about greenhouse and possible heating what is necessary.. Still in this country is commercial greenhouses with artificial lights to grow all year around some plants but they are more south than I am. for example 1000kilometers more south, summer goes 2months longer.. So environmental change so far north than I am is more dramatic than elsewhere... Somewhere 1000km north/south doesn't effect so much the controlling weather.. In there far away north, even 500kilometers are distance what change nature and plant species.
Long dark winter ahead to think about how I am going to isolate my greenhouse. I was think to build "miniature house" with isolation but light penetrating roof and half of the upper walls. Also door I think to build isolated and not light penetrated and isolate it with using certain building materials.
It's hard to explain the environmental changes there but for example 700km south, poppy plant can grow as wild weed plant, but going north every 100kilometers counts at weather more than it matter more south than most of the people live..
Still peyote and few dobular are my choice to grow indoors, no etiolation and using heating to adults also as growth season makes them happy.. As well as seedlings needs extra heat, without extra heat peyote appearance change. Also ariocarpus appearance change when not used extra heat to them.
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gopener
lil_dude



Registered: 06/16/13
Posts: 512
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: intelligentlife]
#18924662 - 10/03/13 06:20 AM (10 years, 4 months ago) |
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First of, you are a hero and you have to love very much your garden, to strangle with your climate like that!
I can tell you that here, because the sun really ''burns'', we have a lot of drop in temperature the nights! I dont have that much experience my self with cacti, this is my first year raising those beautiful species, bat i can tell you that here, many people grow there cacti outdoors, you can see plenty opuntia and cereus species all over the countryside!
Temperatures in summer can rise to 45 C the day and can drop to 15 C the night ( its not that common, bat it happens many times). Now i saw in a site, that trichocereus species can handle temperatures minimum -9 C i am not sure if i can post the link, so if you like to give it to you just P.M. me.
Good luck with your greenhouse!If you build it i would like to see some pics!!
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intelligentlife
Noaidi



Registered: 10/18/10
Posts: 2,627
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: gopener]
#18924798 - 10/03/13 07:36 AM (10 years, 4 months ago) |
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But it's cold hardiness said when plant is at dormancy, I have seen someone has tested them when soil is wet and plant tissue is full of water.. However, this is about the cold nights of summer when plants are plump up and soil is moist..
Probably I just need to make sure and craft very good more isolated greenhouse than usual.
My greenhouse growing was first at summer or 2013, probably I need to figure out myself the best plants what survive and what not.. Growth tip damage cause of cold doesn't matter, that happens in nature too, so it's IMO "natural" appearance cactus.
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420milehigh
shaman


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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: intelligentlife]
#18924984 - 10/03/13 08:43 AM (10 years, 4 months ago) |
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it's not very practical but if you have the money to invest, I would suggest aerogel... it is HIGHLY insulative and translucent, a guy wore a jacket with it to climb mount everest and had to go back because he was over heating..
http://inhabitat.com/new-ultra-light-nanotube-aerogels-could-clean-up-oil-spills/
-------------------- All posts are entirely, 100%, conclusively false or complete works of fiction... but I can levitate lol "Any fool can criticize, condemn and complain and most fools do." Benjamin Franklin if I owe you seeds from a previous trade send me a PM, I will rectify my shortcomings and compensate you for your patience
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intelligentlife
Noaidi



Registered: 10/18/10
Posts: 2,627
Loc: EU
Last seen: 7 years, 4 months
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: 420milehigh]
#18925179 - 10/03/13 09:57 AM (10 years, 4 months ago) |
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I can use more cheaper regular building material to use to isolate..
My country are the worlds top cold building industry and I have studied building houses at arctic region. I will invest more but I use regular building material what used to isolate walls.
First of all I build isolated wall about 80cm height using isolation wool designed for arctic region building, it's fairy cheap. Then rest of the height I build two layer polycarbonate or plastic to make "windows" around it.
Door I also build 2inch think and isolated, then I use regular isolation rubber to door so when it's closed it doesn't leak warm air out.
Then I use everywhere bubble rub.. This double layering of greenhouse plastic or polycarbonate layers will reduce the light but it's better than poor isolation cause heat needs to stay inside so greenhouse stays warmer inside than out and with less heating.
I am possibly trying to achieve "too much" but I have planned to build actually greenhouse to there arctic for use 5-6months growing season with heating it. It possible saves more electricity if heating greenhouse than using strong artificial lights at spring and fall.. So if I can left my artificial lighting away and even success littlebit over 5months of growth season and rest of the season dormancy, it would be nice and cactus plants are get only sunlight.
At the moment, greenhouse I am building I will test it so I know how to build good greenhouse what allow me to use 5-6months growing season. Also it's benefit for me cause I can grown food crop +2x more longer time than it's possible without greenhouse. Now my "prototype" greenhouse is just a frame with concrete blocks on the floor what keeps quite warm long time and also there is roof ready. Walls I build at spring when snow goes away.. Then I try to push the limits with that greenhouse and I build electric plug there for heater, also possible I try to push the limits of plant outdoors growing there.
These kinds of things can't be done to paper or think, I need to build prototypes of various greenhouses and know what is best. Greenhouse I have now it's good for chili and cucumber cultivation, also I can use poppy plants as "weed" under big cucumbers so they attract bees to pollinating the chili and cucumber plants. Tomato ain't so good to grow. I germinated seeds at February and harvest was very poor.. Tomato plant doesn't seem to like that rapid temperature change. Greenhouse I have used is only 1-2mm greenhouse plastic and somewhere are just pure glass, that greenhouse doesn't keep heat much and heating it is not really good cause after heater goes off, temperatures drop fast.
The problems I have is just that growth season night temperatures are too low even all cactus plants has been in great shape and very nice! Also I kept several weeks trichocereus pachanoi and few others in there but then I moved some of plants indoors.. I have crest pachanoi on it's own roots and some other rare trichos so I don't want to loose them for cold, regular columnars ain't so bad and if problem is not rot from base cause cold nights, it's good. I don't care if growth tips got some damage from cold if moist soil doesn't cause base rot.
I have actually kept long time plants without water at all, when watered, then I have not watered them for long time cause of condensation water comes to surface of cactus plants and then water drops moisten the soil littlebit.. Also watering should done in my climate differently, I would not water the soil full of water and then wait it to dry, I would prefer giving small amounts of water randomly to avoid root rotting.
Luckily there is construction working going on and I got possible that good isolation wool to use so I can build 2inch thick isolated wall below. For my bad I have south american trichocereus plants, I have heard they are not so cold hardy than some trichos..
With T. Terscheckii I have not even fear I loose the plant and it has been going on +3months in greenhouse before these about -5C frosts hits month ago for one night. Now it's warming up again but nights are frosts even day temperatures are +15C, but soon is mid-winter so this part of the world are going very fast to winter. In two months I have no sunlight and I have seen clearly sun is shining from very low.
However, I possible lost some plants to cold if I am starting to push the limits of cacti and if I find out how much electricity I need at spring and fall, I can try calculate or estimate how long I can keep greenhouse season and how much money goes to heating instead of lighting...
I think artificial lighting consume more electricity than good build heated greenhouse.. That I need to put to test.. ofc this reduce the growth season lots and possible dormancy are longer than growth season, but I have even got as much strong light as sun can offer so only sun light makes cactus appearance nice and what they should be.
Well, next summer tell me more when I test my new greenhouse, I move all my columnar and strong light species in to greenhouse to get their appearance nice and get cacti plants flowering cause of heat and sun there is in greenhouse. Also natural pest control is good cause native spiders loves greenhouses in my climate, if someone fear spiders, my greenhouses ain't for these people.. from top to bottom, there is spiders every where and last summer actually my cactus plants "purified" from pests and was full of spider web when get them inside. Even climate is hazard to cacti, nature offers lots of natural care like spiders hunt pests and bees pollinating plants.
Indoors I have only pests like mealybugs and spider mites.. ffuk! ..in greenhouse I have predators and no need of chemicals as long as I can keep growth season going on.
Still, lophophora plants I keep indoors, even summer there temperatures are similar to their native habitat winter
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modern.shaman
San Mescalito




Registered: 05/09/12
Posts: 3,229
Loc: Zone 13
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: intelligentlife]
#18925401 - 10/03/13 11:20 AM (10 years, 4 months ago) |
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Wouldnt a huge water reservoir/tank protect the plants surrounding it as it would be a source of heat? Im unsure as Ive only read about it; believe it was on the lophophora blog or another greenhouse.
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intelligentlife
Noaidi



Registered: 10/18/10
Posts: 2,627
Loc: EU
Last seen: 7 years, 4 months
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Re: Trichocereus sp cactus cold hardiness dialog and questions. [Re: modern.shaman]
#18929647 - 10/04/13 04:23 AM (10 years, 4 months ago) |
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Yes the water will heat up during day and then when air cools, warm water start to heat up the greenhouse.. Bad about this is it consume space.. I need like +100Liter water tank to get really good effect from it. I have think heat radiator with adjustable temperature, so when it's below +10C or so, it starts heating and so on, actually that way it goes on-off way cause when it's above +10C it shut down and starts heating again when it's below +10C.
They are not actually so expensive and when day time temperatures are high enough, they doesn't even use electricity.. My idea is to build "miniature house with glass roof and walls" except ~80cm of wall below are totally isolated wall like in regular houses have.
Regular electric heat radiatiors used for heating houses would be good to put one in greenhouse cause it controls itself when needs to start radiating heat. Also "light bulbs" what are used for radiating heat.. They are ceramic, would be good to try. They can be put there where is light but only what they radiate is heat waves and they are ceramic round pieces.
Found these "light bulb" kind of heaters from pet stores where people usually buy heating gadgets for reptiles like snakes, turtles and so on. They are cheap and probably effective.. But the price goes expensive cause I have to buy separate thermostate adjuster to control when they are on and off.
Edited by intelligentlife (10/04/13 04:28 AM)
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