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Finthehuman69
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Registered: 02/06/12
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my pedro and the frost???
#19248127 - 12/09/13 12:08 AM (10 years, 1 month ago) |
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so a have a well rooted Trichocereus pachanoi with little pups, where i live its has frost, right now its in a pot, out side, and has a clean plastic bag and a old shirt over it, is this good or should a bring it inside or any other advice?
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Tangich


Registered: 10/28/09
Posts: 8,723
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Yes you should bring it inside immediately and keep it in a dark, cool place until spring.
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HarryL
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Registered: 11/16/10
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Loc: Washington State
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Re: my pedro and the frost??? [Re: Tangich]
#19249872 - 12/09/13 12:22 PM (10 years, 1 month ago) |
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San Pedro are can tolerate some cold; from my limit understanding they are mountain cactus not desert cactus....
Still... In a pot... Would protect from freezing temps... Probably will lose some of it
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Edited by HarryL (12/10/13 05:53 PM)
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verbage
White Squall


Registered: 11/02/13
Posts: 201
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Re: my pedro and the frost??? [Re: HarryL]
#19251234 - 12/09/13 05:05 PM (10 years, 1 month ago) |
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I would bring it inside if possible. These plants can survive dips to the mid 20s Fahrenheit but why chance it? Leaving it outside might damage the cactus tips or the cactus could die. Larger cacti will fair better outdoors.
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Finthehuman69
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Registered: 02/06/12
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Re: my pedro and the frost??? [Re: verbage]
#19251929 - 12/09/13 07:02 PM (10 years, 1 month ago) |
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ok, I will do that, ASAP. I'm in bay area California so id doesn't drop below 20 F. but thank you all for advice again
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naum


Registered: 10/09/07
Posts: 4,069
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20 F is too cold for Trichocereus. Anything below freezing for long periods of time is dangerous especially if the soil is wet at the same time like it would be in the Bay Area/Nor Cal during winter. If it's not too wet and the plants are dormant they can handle stretches of 26-28 F without any damage.
I wouldn't necessarily put it in the dark. I tend to get etiolation when I do that, but ambient light in a sunny kitchen tends to prevent them from etiolating here.
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Finthehuman69
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Registered: 02/06/12
Posts: 271
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Re: my pedro and the frost??? [Re: naum]
#19254914 - 12/10/13 11:26 AM (10 years, 1 month ago) |
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Naum been way to long. Ok so I will move it in the kitchen what where it first grew up earlier this year, Is etiolation part of the dormancy process?
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intelligentlife
Noaidi



Registered: 10/18/10
Posts: 2,627
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Etiolation is the sign of wrong conditions.
If you want your cactus to hibernate and it grows skinny top, you have not succeed with it.
Best case for dormant the cacti are few hour of some scattering ambient light and +5-15C temperature. Cactus will stop etiolate and grow slim in higher temperatures but you should not water it for long time.. It takes some time and cactus growth is stunted because of dehydration.
In my country what is at arctic, some echinopsis will flower and hibernate very good at windowsill even they are in room temperature but half year of dry period and half year sunny and moist cause later cactus to "understand" when it's winter and when it's not.
Anyway, best dormant places I know there is windowsill with some draft. Sometimes I have seen cacti around people windowsill what are very slim at certain parts because they are above heat radiator and there are no sun at all over winter.
Some very fast growing cactus will grow slim growth very easily so makes sure you don't water them for long time if you want to hibernate them in higher temperatures but force cactus to believe it's winter because there's no water. Some species doesn't need so cold shock, more important is long period of dehydration and cool temperatures are just extra to make dormant season perfect for cactus.
Some mammillaria are actually good and easy to grow everywhere if species are suitable to hibernate as "semi-dormant" and it's the way you don't drop temperatures much but hold watering but still give some small amount of water, but never so much you could give at summer time.
Some san pedro are so fast growing you don't want to even give any water spray for them at winter and they starts to grow slim etiolation. In habitat this is actually normal they grow over winter and summer and winter growth is more skinny compared to summer growth, I don't know does this happen because of short day at winter..
I have learn with artificial lights, 12hour day time makes cactus grow more slim compared to 16-18hour day length.. In habitat trichocerei will have winter and summer rainfall and at winter they grow slim but because of cold temperatures the growth rate is not so fast compared to summer..
Atleast I think it's someway like this with trichocereus but they are very hard to keep compact without cold periods and drought to stop temp growing over winter.
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Finthehuman69
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Registered: 02/06/12
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Hmm that its a lot of information to digest right there, Im grateful for that. my san pedro is a little over 70cm tall and was started by cutting around 8 or 9 months ago, so windowsill is out of the question. it is not etiolating current but was mainly just curious if it is common or normal for that to happen during winter months.
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HarryL
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Registered: 11/16/10
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Don't water them much while inside and with no or little sun Over winter in a place that is cool and dim or no light if possible... Garage works I just bring mine in before it starts freezing and water twice over the whole winter (next week)
From my experience over the last few years, cactus elongation is not enough sun light while actively growing... Don't water and they don't grow
Overwatering and bugs are probably two most common problems
Caution in the spring, will sun burn them if you don't introduce them slowly to the sun again
Just my two cents
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Finthehuman69
Adventurer



Registered: 02/06/12
Posts: 271
Loc: P.N.W.
Last seen: 3 years, 11 months
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Re: my pedro and the frost??? [Re: HarryL]
#19256765 - 12/10/13 06:16 PM (10 years, 1 month ago) |
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slow introduction, thats is going down in the notes. mine has doubled in thickness of its original cutting size
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intelligentlife
Noaidi



Registered: 10/18/10
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Loc: EU
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IF you can get a place for winter where is cool and light, they don't need to introduce so much to new sunlight but anyway, sudden spring sun can burn cacti anyway.
Best choice would be a garage with some CFL light bulbs but not much and they can be far away so they don't give heat. You can use timer like 8-10hour of light. Anyway, as long as they don't have any water and temperatures are cool, you can give light to cactus.
Anyway, it's not necessary but in habitat they will have anyway light but day time is shorter and temperatures are colder, also they have some rain but it's different cause big columnar cactus can have very large root system underground when rainfall at cold time of year doesn't matter at all, potted plants are different cause even small rainfall actually fill up the pot with water and it's not good.
I have seen some people there grow san pedro outdoors over summer and winter time they keep plants under HPS light at cannabis growing closet/room and they are not actually looking so bad at all. They are half year under strong HPS light without water and half year at balcony/greenhouse or somewhere sunny place.
There are only few serious collectors who keep cacti over 6months in greenhouse and coldest time of year in garage under CFL at temps of +5-10C.. Most people have cactus there indoors all their life time and watering happens only at summer. Temperatures can be very same year around but stills some echinopsis and mammillaria and few species will bloom at windowsill when they start to get water after long dark winter. some people use extra lights for them at winter with timer only few hours on and some doesn't give them any light at all over winter.
I have been in situations I can't offer a cool place for trichocereus so I just need to hold watering, they will shrink and go stunted and stop growing.. Maybe very small etiolation happens but it's not significant at all. In my climate I should choose a slow growers, not fast growing plants need full sun but I want to push the limits..
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