Yellow leafs in flowering.

[Guest]

My question is it normal for a plant once set in flowering to just lose leafs?

I know you need to supplement N through the beginning of bflowering depending on how long the strain runs for.

Even when i do that I have a plant that other wise looks very healthy bbut just "molts" random sun leafs.

The buds and leafs closes to the buds stay green, the plant just seams to yellow out on the larger sun leafs.

My question is this normal for a plant to "randomly" lose leafs once set in flowering, or am i not supplementing enough N.

 

[TennesseeJed]

My question is this normal for a plant to "randomly" lose leafs once set in flowering, or am i not supplementing enough N. =======answer-- normal

 

[Max21]

You're indoor ? Maybe overwatering... let them drink and get the container dry before you water again..
maybe those leaves are too far from the light...
are your plants getting yellow from the bottom ? then supplement N, but if it's not a clear yellow gradient starting at bottom, you shouldn't give them more N.
My 0.02€

 

[sproutco]

Some leaf loss in flowering is normal. Sometimes leaves will go yellow even after adding a dose of fertilizer.

 

[Guest]

Thanks everyone!

 

[Guest]

Bump - anyone else got any thoughts?

 

[Vaguerant]

My first grow I started out in Miracle Grow soil, and I'd transplanted a week or so before I put them into flower. The soil was supposed to feed for 30 days, but two weeks into flower the fan leaves started to yellow -- bad.

I was afraid that if I fed them much of anything that early on I'd burn them, so I waited. The plants continued to yellow out, even after I started feeding them. The thing is, they never stopped packing on weight. Maybe not as much as if they'd been completely healthy, but they were fattening up right to the very end.

When I harvested them there wasn't a fan leaf left on them, just bud leaf, and even those had begun to yellow. But like I said, it was swelling up all the way to the end.

Short answer: Don't worry too much about a few yellowing fan leaves...it's natural, and everything's gonna be ok.

Vaguerant

 

[Azra3l]

Hi,

Yellowing of old leaves in middle flowering is just a part of the senescence process. It will be accelerated by slight deprive in mobile elements but most of the time, this process won't be harmfull...
If you wanna stop it, you can use a little amount of cytokinins present in some products like Plagron Phyt-amin after the stretch. But this is really not alarming.



+++

 

[mriko]

happen to mines as well (2 Himalaya Gold from GH, outdoor it pots)), but the yellowing has started right at the start of flowering. Never ever in former grows it had been so early starting. USually was rather at middle of flowering, and could be countered with the appropriate dose of Fish juice. Here, it has no effect at all.

Irie !

 

[dre86]

This topic eases my mind.

 

[Ennui42o]

Like others have said, yellowing during the flowering process is completely normal. I’ll expand on the topic a bit and tell you why.

When you kick your plants into a 12/12 photoperiod you are mimicking the shorter days of the fall months when the cannabis plant would bloom naturally outdoors. During this time the plant realizes that winter is near and its days are literally numbered. This causes the plant to stop focusing on new growth and begin producing its male or female sex characteristics so the plant may propagate itself for the next season via seed. The shorter days combined with almost no new vegetative growth causes the plants to run low on stored sugars needed for life processes and the production of flower/pollen/resins etc…

This lack of sugars causes bigger fan leaves and other less-necessary foliage to yellow, brown and eventually die so that the bud-sets or pollen sacs take priority. Its the same process that other species of plants (namely trees) go through each year at the same time period and is entirely normal to a certain extent.

However, If it is early into your flowering cycle and a great majority of your leaves are yellowing and dying this may indicate another problem. But toward the middle and end of the flowering process it is totally normal. If you look at pictures of cannabis plants late in the flowering cycle such as in High Times or places on the net you will usually see a lot of the larger fan leaves will have taken on a yellowish/reddish/purple-brown color depending on the strain.


Hope this helps.
E.