Let's play Name That Leaf Issue.

[DankNugz420]

Experiment yourself. Take 2 similar plants. Defoliate one and not the other. See what happens

 

[DirtyLarry]

Thank you friends. I've moved those 5v case fans under the canopy to increase airflow there. I defoliated all the leaves with light to moderte pm, tried to spread the canopy out a bit and removed the largest solar leaves in the lower canopy. I sprayed that home store bought neem oil on the top and bottom of the leaves, stems and fabric pots and wiped down the rest of the space with some disinfectant wipes. Hopefully I can kill most of the spores so it doesn't come back later.

Interesting perspectives on controlling RH! I just thought I had to keep it under a certain level based on growth stage, not that the delta also should be minimized. Does anyone know of a small space humidifier/dehumidifier combo? This start up humidifier company is getting a lot of press in the beauty space right now lol https://getcanopy.co/ seems like a waste to hide it under my plants.

 

[RippedTorn]

I've ran 88f 75rh with zero air movement. As long as humidity and temp drop together at night, I'll keep saying PM is a myth.

 

[DirtyLarry]

Ready for round 2? It's a lightning round lol. I noticed all of these odd things, assuming they're pests?

 

[GNick55]

geez.. where to start..
that’s in coco?

 

[DirtyLarry]

Yes

 

[GNick55]

Yes

ok, well i’ve never used coco, some issues could be a few things, so i don’t want to go saying something is something and it’s not..
you’ll have to go through a checklist kinda thing.
do you notice any other odd stuff?
you could have overwatering, pest, root issues, deficiency, lockout.,
i think it’s best to wait for an experienced coco grower..

 

[DirtyLarry]

Ah gotcha. Would love some help! I haven't noticed anything other than the leaf spots, PM and missing pieces of leaf. They seem to be happy and healthy otherwise. I noticed the spots a couple weeks ago on one leaf. I thought I might have been too aggressive with the feed. Then I put the screen on, trapping the leafs on top of causing them to trap moisture. I noticed the PM a week or so later. Then I tried to separate the leaves and branches a bit and may have been a little rough and damaged them a bit, I'm not sure. But yesterday before I sprayed them with neem oil I took those photos of the missing chunks of leaf and other spotted leaves.

The grow details are:
2x Gelato clones
Coco coir in 3 gal fabric pots
1.5 tbsp fox farm grow big per feeding
1 tsp fox farm cal/mag per feeding
tap water
feed about every 3 days
the cabinet is 30.5" x 15" with lots of had room
100w closet case light
250 cfm exhaust fan and a few small air movement fans

 

[DirtyLarry]

My flower runs go 60% to 70% rh but I defoliate heavy. I agree that leaves are solar panels but I also believe big leaves aren't as efficient. Timing is key in my eyes. I defoliate heavy in veg and schwazze in flower. Go hard or go home kinda deal I suppose lol

How common is the schwazze method? I feel like I should try it because my space is so narrow and it will obviously really improve my airflow.

 

[Mr.GreenthumbOG]

How common is the schwazze method? I feel like I should try it because my space is so narrow and it will obviously really improve my airflow.

Let’s see an updated photo of your defoliation.
Mr.G

 

[HaveApuff]

What does your leaf look like from underneath?

 

[HaveApuff]

It appears to be either:

White Powdery Mildew on Cannabis Plants - Identification & Solution!

White Powdery Mildew (aka White Powdery Mold) can be the cause of white spots on your leaves that looks like patches of flour. Learn how to get rid of it!

www.growweedeasy.com

OR

Spider Mites & Cannabis - How to Identify & Get Rid of Them Quickly!

Spider mites are a common cannabis pest that can be very difficult to get rid of. Learn how to spot and treat at the first signs of these nasty pests.

www.growweedeasy.com

 

[DirtyLarry]

Let’s see an updated photo of your defoliation.
Mr.G

You read my mind, I think I need to go hip on the defoliation. Wondering if I can stick with just the one round of neem oil, then a day later heavily defoliate and flip to 12/12?

 

[DirtyLarry]

It appears to be either:

White Powdery Mildew on Cannabis Plants - Identification & Solution!

White Powdery Mildew (aka White Powdery Mold) can be the cause of white spots on your leaves that looks like patches of flour. Learn how to get rid of it!

www.growweedeasy.com

OR

Spider Mites & Cannabis - How to Identify & Get Rid of Them Quickly!

Spider mites are a common cannabis pest that can be very difficult to get rid of. Learn how to spot and treat at the first signs of these nasty pests.

www.growweedeasy.com

Thanks for the links. I'll look em over. I did some general reading on pets and fungus before I posted, but wanted to get the community's thoughts.

 

[Mr.GreenthumbOG]

defo as soon as you can. Way to many leaves. Need to breath.
give it a few days to recover after before the flip.
Mr.G

 

[DirtyLarry]

What does your leaf look like from underneath?

I looked for anything other than a nicely saturated green leaf and didnt see anything to note.

 

[Mr.GreenthumbOG]

You read my mind, I think I need to go hip on the defoliation. Wondering if I can stick with just the one round of neem oil, then a day later heavily defoliate and flip to 12/12?

Just saw your photo. Looks better.

 

[GNick55]

wpm has to be dealt with it, first and foremost!
or the grow will not be worth it..

 

[DirtyLarry]

wpm has to be dealt with it, first and foremost!
or the grow will not be worth it..

Is there a rule of thumb for quantity and frequency of neem oil treatments to correct wpm?

 

[Mr.GreenthumbOG]

Is there a rule of thumb for quantity and frequency of neem oil treatments to correct wpm?

Fix the problem causing it. Pm is there to stay.