~star~crash~
Active member
the issue for me in my area for this time of year is keeping the cloner rez temps cool
the issue for me in my area for this time of year is keeping the cloner rez temps cool
Actually light cycles can greatly affect cloning time depending on how acclimated the source cut got over time. I've seen a number of clones that will only root under 18/6.
-Life
Cannabis is a C3 plant - it don't grow or root in the dark cos it can't. all they do in the dark is stretch looking for light. C4 plants can and do need dark in veg too but not Cannabis.
Also, the faster growth on 24 is fact. C3 plants do everything during light so any dark period at all reduces growth. the only thing they need dark for is to trigger flowering.
I was reading up on Phytochrome in Cannabis more than a decade ago and no new discoveries have been made AFAIK.
While it's true that they don't do much in darkness... Some varieties do need that temporary switch between Pr and Pfr to release the proteins needed to root. It's been shown the phytochrome plays a role in seed germination which is where phytochrome proteins that are crucial to proper rooting take place, so I don't see why it would be any different when a clone is taking root. All I know is I've tried alot of different methods over the years and if I take True or SFV cuts and try to root them under 24 hours of light then they either never root or take 20+ days.. But if I switch it to 20/4(or 18/6), it magically roots in 10 days, sooo it's definitely playing a role.
-Life
The reason why is that a seedling isn't mature and won't produce auxins no matter how much phytochrome accumulates, if it accumulates at all. A clone from a mature plant will accumulate phytochrome and that stimulates production of auxins which inhibit root development. This is why clones from flowering plants on 12/12 don't root.
i always take clones 7-10 days into flower ,it makes the stems hardier and they stand up better ,
just aquired the gg4 so will let you know how she responds when i clone her
In reality, they often root a bit quicker. Too late in flower can trigger a reveg period. The further into flower, the more difficult it becomes to root.This is why clones from flowering plants on 12/12 don't root.
This is why clones from flowering plants on 12/12 don't root.
In reality, they often root a bit quicker. Too late in flower can trigger a reveg period. The further into flower, the more difficult it becomes to root.
Are you sure, mate?
This cut was taken from a plant that had flowered around 6 weeks, if i remember it right. It took around 3 weeks+ to show roots, but rooted eventually.
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In reality, they often root a bit quicker. Too late in flower can trigger a reveg period. The further into flower, the more difficult it becomes to root.