Week 6 flower, 90 days since potting seeds, high heat?

[SeniorMoments]

6 plants , 3 varieties. One plant was showing stress which showed up about a week and a half ago.
The edges of some leafs were dark with yellow edges. See attached photo.
I had some high temps ( 84* F late afternoon) but resolved that issue over the weekend.
I vented all heat outside w/ 6” inline exhaust system.
I was venting to the garage which worked OK until outside temps got over 90*.
This is a soil grow in a closet in my garage .
LED lights . Fox Farm nutrients @ 9 week soil feeding schedule .
Should I flush this one plant ?
@Emilya @Pennywise @oldsmokey.
Anyone ?

 

[Emilya Green]

It looks to me like it is experiencing a bit of a potassium deficiency... I can't see any logic in not feeding it for any amount of time if that is your meaning of the word flush. If you mean a 3x flush to clear the salt lockout in the soil that might be causing this deficiency, I think it is the perfect time for that.

 

[SeniorMoments]

It looks to me like it is experiencing a bit of a potassium deficiency... I can't see any logic in not feeding it for any amount of time if that is your meaning of the word flush. If you mean a 3x flush to clear the salt lockout in the soil that might be causing this deficiency, I think it is the perfect time for that.

Yes 3x flush is what I am thinking.

 

[oldsmokey]

I agree with Emilya k def.

 

[oldsmokey]

A good book is the cannabis encyclopedia. A lot of the stuff is redundant for an experienced grower. But the chapter on nutrients which also explains and illustrates deficiencies and toxicity is worth the purchase price alone. I refer to it all the time.

 

[Pennywise]

Just reduce your nutes a little.

 

[SeniorMoments]

Thanks folks.
Your quick responses are appreciated.

 

[SeniorMoments]

She was not in bad shape but I was concerned.

 

[Pennywise]

Looks a little heavy on nitrogen, that could be locking out other nutrients. She looks good overall though.

 

[Emilya Green]

If you are sticking to the FF feeding schedule, I tend to think this is a salt lockout and not mineral antagonism. FF grows usually do not create imbalances unless something else is wrong or is being added.

 

[SeniorMoments]

Looks a little heavy on nitrogen, that could be locking out other nutrients. She looks good overall though.

I just flushed her w/ fresh well water adjusted to 6.2 PH.
15 gal flush. Moved her to the front of my grow room so I can monitor.

 

[SeniorMoments]

If you are sticking to the FF feeding schedule, I tend to think this is a salt lockout and not mineral antagonism. FF grows usually do not create imbalances unless something else is wrong or is being added.

Whatever the issue , hopefully the flush takes care of it ?
Yes I am hanging w/ the FF feeding schedule but I did skip a scheduled flush a couple weeks ago because there did not appear to be any issues. But skipped ALL 6 plants.
The weird thing this plant is Aurora Indica and I have 2 others w/ no issues.
I suspect during feeding , at some point , I gave her an extra 2 cups of nutrients ?
IDK ?

 

[Emilya Green]

Whatever the issue , hopefully the flush takes care of it ?
Yes I am hanging w/ the FF feeding schedule but I did skip a scheduled flush a couple weeks ago because there did not appear to be any issues. But skipped ALL 6 plants.
The weird thing this plant is Aurora Indica and I have 2 others w/ no issues.
I suspect during feeding , at some point , I gave her an extra 2 cups of nutrients ?
IDK ?

it could be that this one wasn't using all of the nutes that were being given and some nutes had built up in the soil. It could also be the opposite, and that this extra hungry plant has processed more of the nutes than the others, therefore leaving behind more salts than the others. In either case, the flush should take care of things... and at this point you are looking for the damage to stop progressing... the damaged areas are not going to have time to repair in the time left.

 

[SeniorMoments]

it could be that this one wasn't using all of the nutes that were being given and some nutes had built up in the soil. It could also be the opposite, and that this extra hungry plant has processed more of the nutes than the others, therefore leaving behind more salts than the others. In either case, the flush should take care of things... and at this point you are looking for the damage to stop progressing... the damaged areas are not going to have time to repair in the time left.

Should I just go ahead and remove the damaged leaves ?

 

[Emilya Green]

Should I just go ahead and remove the damaged leaves ?

absolutely not

 

[SeniorMoments]

A good book is the cannabis encyclopedia. A lot of the stuff is redundant for an experienced grower. But the chapter on nutrients which also explains and illustrates deficiencies and toxicity is worth the purchase price alone. I refer to it all the time.

Since I am NOT an experienced grower , little will be redundant to this old gardener.
I ordered the book. Thanks Smoky.

 

[oldsmokey]

It's a good book another member her recommended it to me well worth the read.