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Jon2jay
Junior shaman
Registered: 04/26/14
Posts: 296
Last seen: 3 years, 8 months
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Trichocereus sunlight question
#21971929 - 07/20/15 05:50 PM (8 years, 6 months ago) |
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So i have been growing trihocereus, san pedro, and some other cacti for almost 2 years now. I have a question that i cant find a valid answer for.
My bridgesii are etiolating which i know is due to insufficient sunlight. Now they recieve sun outdoors, however if i move them into direct sunlight, they burn.
How do i give them the sun they need with out roasting them?
They are currently in the north side of my house,but get hit with morning sunlight pretty direct. If i move them so they get noon sun or afternoon sun, they seem to not be able to take it.
What can i do?
-------------------- Anything posted by me is either hypothetical or completely fictional and is for entertainment only.
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Zombi3
Bella Ciao!!




Registered: 01/11/13
Posts: 27,086
Loc: Bat Country
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Re: Trichocereus sunlight question [Re: Jon2jay]
#21971986 - 07/20/15 05:58 PM (8 years, 6 months ago) |
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What's your location? If you harden off the plants properly they can easily handle full sun. I have my seedlings under full sun by week 3-4 and they stay in full sun almost their entire life.
-------------------- Plants Love To Think
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Jon2jay
Junior shaman
Registered: 04/26/14
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Re: Trichocereus sunlight question [Re: Zombi3]
#21972057 - 07/20/15 06:11 PM (8 years, 6 months ago) |
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What do you mean harden off the plants?
Im in newyork
-------------------- Anything posted by me is either hypothetical or completely fictional and is for entertainment only.
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Zombi3
Bella Ciao!!




Registered: 01/11/13
Posts: 27,086
Loc: Bat Country
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Re: Trichocereus sunlight question [Re: Jon2jay]
#21972074 - 07/20/15 06:14 PM (8 years, 6 months ago) |
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-------------------- Plants Love To Think
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Jon2jay
Junior shaman
Registered: 04/26/14
Posts: 296
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Re: Trichocereus sunlight question [Re: Zombi3]
#21972089 - 07/20/15 06:16 PM (8 years, 6 months ago) |
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Oh. These guys arent seedlings. Theyre 12-15" easily.
Ironically i have seedlings of pervuanus apple cactus that are growing great!
My already established guys seem to be etiolating.
-------------------- Anything posted by me is either hypothetical or completely fictional and is for entertainment only.
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Zombi3
Bella Ciao!!




Registered: 01/11/13
Posts: 27,086
Loc: Bat Country
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Re: Trichocereus sunlight question [Re: Jon2jay]
#21972115 - 07/20/15 06:21 PM (8 years, 6 months ago) |
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All plants need to be hardened off when being moved from low light to full light. Not just seedlings.
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kosmokratorshaman
Cosmic Creator

Registered: 05/13/15
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Re: Trichocereus sunlight question [Re: Zombi3]
#21972371 - 07/20/15 07:04 PM (8 years, 6 months ago) |
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damn, my seedlings are still in humidity
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Jon2jay
Junior shaman
Registered: 04/26/14
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Damn. Ok ill do this. So basically just give them full sun slowly?
Whats the best method like an hour or two each day a week and every week increase the duration of full sun?
-------------------- Anything posted by me is either hypothetical or completely fictional and is for entertainment only.
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FlyOnTheWall
Stranger


Registered: 06/14/15
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Re: Trichocereus sunlight question [Re: Jon2jay]
#21973347 - 07/20/15 10:28 PM (8 years, 6 months ago) |
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Quote:
Jon2jay said: Damn. Ok ill do this. So basically just give them full sun slowly?
Whats the best method like an hour or two each day a week and every week increase the duration of full sun?
I am interested in hearing the answer to this question as well.
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Lemnaminor
Lophophora - eyed



Registered: 11/13/13
Posts: 1,366
Loc: Sicily
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Re: Trichocereus sunlight question [Re: FlyOnTheWall]
#21973713 - 07/20/15 11:46 PM (8 years, 6 months ago) |
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i menaged to slowly adapt an A.Asterias to full sun, with no damage, proceeding with progressive sun exposion. And I live in sicily, and all my plants are south facing. At today, the only specimen that i failed to adapt to sun is an neoporteria occulta that turns from violet to orange, and is suffering . but i have other occultas, that grow in full sun and keep their violet colour, so i guess it's only because of the original place the orange one was grown. it will slowly adapt too i guess.
I do find strange that trichs have difficulties to stay in full sun, anyhow, if you are having this issue, i guess that progressive exposion is the way. Give them 1/ half additional hour of sun every day/week (how fast is the process is up to you and to your plants response) I think that this should reasonably work.
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      "The best things in life, come covered in spines."
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Jon2jay
Junior shaman
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Re: Trichocereus sunlight question [Re: Lemnaminor]
#21974264 - 07/21/15 05:27 AM (8 years, 6 months ago) |
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Ok im going to do this. I wish i knew this a year ago. :/ ill see how it goes. I just dont want these guys to burn any more
-------------------- Anything posted by me is either hypothetical or completely fictional and is for entertainment only.
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intelligentlife
Noaidi



Registered: 10/18/10
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Loc: EU
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Re: Trichocereus sunlight question [Re: Zombi3] 1
#21974506 - 07/21/15 06:54 AM (8 years, 6 months ago) |
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Quote:
Zombi3 said: All plants need to be hardened off when being moved from low light to full light. Not just seedlings.
Just want to add this goes reserse as well. Ive managed to kill few year ago grafted cactus simply by moving it from baking sun(greenhouse) to shady place(indoors). It goes to black mush from side most strongest sun received. But it's not relevant to this.
And sun spots may occur both way as well. By moving cactus to strong sun frmo shade or taking cuttings and move them to shade cause same symptoms.
Graft of mine died when I moved it indoors at middle of day from full sun. It went black ooze from size it was had direct sun in greenhouse. Shady side was ok but whole plant died. Trich cuttins have been had sun spots when I cut them and move asap them indoors.
It just doesn't may happen with trichocereus cuttings so often. I took two cuttings of pachanoi this summer, another had sun spots after I moved it indoors to dry. Another doesn't.
Seems any kind of sudden light decrease or increase at "wrong time" will cause spots to skin.

These clones should not shock so easy but it seems another shocked of light level drop. I have some clones very prone to sun spots, these are the best ones. Meaning I barely see sun spots on pachanoi's. But possible to get them as well. Basically 50% of cuttings had sun spots but persentage as numbers fool much because there's only two cuttings total. This happen very random and sometimes not a single cutting starts to develop sun spots when moved to dark-shade.
 KK339 pachanoi and unknown south european pachanoi clone. KK339 had sun spots only after moved away from sun, spots starts to develop in 20-30hours. Only to one side of cutting have spots. Side towards mid-day sun had spots in dark indoors.
Two cuttings at pics, different clones. Cuttings taken about 7-10days ago. I cut them from main column and moved them to indoors(from greenhouse) to callous. Plant with sun spots didn't had any of them ever and had smooth and nice growth without any spots, till I take cutting from it it shocked of light level change. But it seem that clone shocked from light level change from bright diffused sun to shade. Atm they are spending time in empty pot, gonna plant these till roots come out.
This doesn't happen to all clones or it's not necessary matter of a clone. But same symptoms may occur from bright -> dark-shade. Light level change is fucking a lot if you go indoors -> outdoors or another way. Our eyes just don't see how shady and "dark" our houses really are. It's dramatical difference.
Just wanted to show sun spots may occur by taking cuttings and move cuttings to dark from bright light. I didn't cut these during day, so they wasn't in full sun. Another one still had spots of instant and sudden change of level of light. Sun light is really stronger than it seems to our eyes. Turning containers around may cause those as well.
I would use some shade cloth to diffuse the sun light to prevent too dramatical shock of light level change, it seems to prevent sun spots forming when plants need to be moved.
Those clones I used to know very resistant against sun spots, compared to many other trichs. Anyway. Another cuttings is just fine, didn't shocked. But this may happen, I mean reverse way of light level change and sun spots.
This isn't not so common but plausible to have spots to cuttings by reducing the light level dramatically and instantly fast. From dark/shade -> bright light it's more common to cause sun spots.
This doesn't happen so often but it doesn't mean it's impossible to get sun spots by moving cutting to "almost dark". I would be cautious more if plant is going to be moved to bright light from shade.
Just wanted you guys to know it goes both ways and depends of clone as well. Reverse way of light level change isn't so usual anyway.. Just accidentally happened to me to these. Mainly cuttings of mine don't have had shock when I take cuttings, it's still plausible and can happen to cuttings if sun is suddenly gone.
Spots form only to side what have received the strongest mid-day sun in greenhouse. Northern side of skin don't have sun spots nor another clone didn't shock at all. Even tho, I handle these both cuttings sameway and same time with same knife etc. I think this is more based how prone clone is for this, but I am not sure of it. Seems it's random what pachanoi have them and what doesn't. But I've noticed side of column receiving strongest sunlight, will be more likely to have those spots when moved in to shade to form callous. It's rare, but not impossible behavior of trichs, I mean both way of light level change should be paid attention, just in case if person don't want sun spots to cutting. That behavior isn't fatal to column cuttings anyway. Just leaving scars to plant later on.
Edited by intelligentlife (07/21/15 06:58 AM)
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kosmokratorshaman
Cosmic Creator

Registered: 05/13/15
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Last seen: 7 years, 4 months
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I have had some issues where a few of my trichs are not able to tolerate direct sun at all, but the majority can and will. Ive got all my plants on a covered patio for now. They get 3-4 hours of full sun a day. Some of it is a little diffused. I am still reworking my greenhouse, but once it is up, I will have everything in there.
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cowsRmeat
Don't step on the MomeRaths



Registered: 04/23/14
Posts: 3,153
Loc: Wonderland
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Re: Trichocereus sunlight question [Re: Jon2jay]
#21977047 - 07/21/15 07:10 PM (8 years, 6 months ago) |
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Quote:
Jon2jay said: Damn. Ok ill do this. So basically just give them full sun slowly?
Whats the best method like an hour or two each day a week and every week increase the duration of full sun?
Essentially, yes.
Put em in the sun for an hour each day for a few days then slowly up the amount of time spent in full sun until they can just stay in full sun.
-------------------- One day Alice came to a fork in the road and saw a Cheshire cat in a tree. 'Which road do I take?' she asked. 'Where do you want to go?' was his response. 'I don't know', Alice answered. 'Then', said the cat, 'it doesn't matter.'
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