What is going on with my cannabis leaf??

[bartmart164]

This is the stuff im seeing dint know if its bugs or mold ?? There is white spots on leaf and black dots in clauters??

 

[Putthataway]

I think you have aphids.

They shed their exoskeleton looking like dead bodies. Then looks like some black bugs on the left side.

 

[Mikedin]

I think you have aphids. View attachment 2215667They shed their exoskeleton looking like dead bodies. Then looks like some black bugs on the left side.

Could be thrips looks like the thrip damage I had but I was able to see the thrips at about the above magnification,

I’d like to see higher magnification on those black dots though, spider mites?

 

[Sunin]

black, small - that won't be a thrip
yes- proper picture of that black stuff would help

 

[Eledin]

Im with @Putthataway more or less, they look like black aphids. They tend to bunch up like that and the leaf damage is similar as it would be with thrips. But yeah, a close up on them would be great to confirm as I remember them being bigger but who knows, there's a lot of species.

 

[Eledin]

It could also be powdery mildew, the fruiting body (what would be the shroom for other fungi) is black. It usually doesnt appear in that many spots at once at first and usually its well... powdery, but when the infection starts it can look like that in some cases before becoming clusters of "powder". Are they in flower or veg?

 

[Eledin]

Took me a while but I could find a couple of pictures of examples.

Close-up of cleistothecia (fungal fruiting body) of powdery mildew on beets
Photo: Oliver T. Neher, The Amalgamated Sugar Company, Bugwood.org

And here is how it looks at the start before it gets all powdery in a case similar to yours:

Now check with a magnifying glass if they are black aphids or powdery mildew fruits. If its in veg you can use anything you like, I would recommend something organic, there's plenty of organic pesticides like potassic soap. If its in flower... you shouldnt spray any pesticide organic or not. What I would do in that case is mix a ratio of 1:4 of 3% hydrogen peroxide:water and spray it on top and below the leaves. Wether its powdery mildew or black aphids it will help.

 

[RGWD0202]

Could be thrips looks like the thrip damage I had but I was able to see the thrips at about the above magnification,

I’d like to see higher magnification on those black dots though, spider mites?

looks like spider mites to me. Pretty small to be aphids or thrips. Unless it’s their excrement, then I’d say thrips.

 

[Sunin]

layer is too eaten out for powdery mildew
Thank you @Eledin for those nasty mildew close ups

 

[Eledin]

layer is too eaten out for powdery mildew
Thank you @Eledin for those nasty mildew close ups

Yes I was thinking that even if it has powdery mildew it has bite marks, youre right. The white spots could be powdery mildew but the yellow spots are from some bug.

looks like spider mites to me. Pretty small to be aphids or thrips. Unless it’s their excrement, then I’d say thrips.

That would fit more the size of those things but Ive never seen black spider mites, Ive always seen them red, do they exist? Also I dont see any web, when theyre already in such quantities there shoul be webs, right? Thats my experience at least, but thats why I ask, I dont know hahaha. Maybe there are black spider mites, just not where I live.

 

[Sunin]

Maybe there are black spider mites, just not where I live.

many of them small ones just look black
clover mites for example are bright red - for the eye they are just black dots

and where's the owner with better photo?

 

[Eledin]

many of them small ones just look black
clover mites for example are bright red - for the eye they are just black dots

and where's the owner with better photo?

I see, thank you for the info!

 

[hawkman]

I think you have aphids. View attachment 2215667They shed their exoskeleton looking like dead bodies. Then looks like some black bugs on the left side.

try this product to get rid of them+ others "Lost Coast Plant Therapy" it's organic and works FYI (believe you can request a sample of - (3 FL oz)

 

[bartmart164]

It could also be powdery mildew, the fruiting body (what would be the shroom for other fungi) is black. It usually doesnt appear in that many spots at once at first and usually its well... powdery, but when the infection starts it can look like that in some cases before becoming clusters of "powder". Are they in flower or veg?

Just brought to flower room

 

[bartmart164]

Could be thrips looks like the thrip damage I had but I was able to see the thrips at about the above magnification,

I’d like to see higher magnification on those black dots though, spider mites?

 

[Eledin]

Leaf septoria? @Sunin @Mikedin
Looks like some kind of fungal infection but not sure if powdery mildew or leaf septoria. My vision is not very good but that doesnt look like bugs to me. I might be wrong lets see what people has to say.
Are you meassuring your PH? The only other thing that occurs to me is a deficiency caused by nutrient a lockout but never seen it like that.

 

[bartmart164]

Leaf septoria? @Sunin @Mikedin
Looks like some kind of fungal infection but not sure if powdery mildew or leaf septoria. My vision is not very good but that doesnt look like bugs to me. I might be wrong lets see what people has to say.
Are you meassuring your PH? The only other thing that occurs to me is a deficiency caused by nutrient a lockout but never seen it like that.

Ph was at 6.4 when in veg i only was using heavy 16 veg a and b , can it be nutrient deficency?

 

[Eledin]

Ph was at 6.4 when in veg i only was using heavy 16 veg a and b , can it be nutrient deficency?

Never used that brand, took a peak at what it has in their website but they only mention 3 forms of nitrogen and "diverse vegetative nutrients". I have no clue, here is their feeding table in case it helps you, I dont know which liquids are suposed to be used and which ones are optional because they also dont say that.

Nutrient Calculator - Heavy 16 - Feed Calculators

Heavy 16 Nutrient Calculator.

www.heavy16.com

 

[Eledin]

Usually a base NPK fertilizer for veg should give you all the basics for veg but because they dont even tell you what their base has I cant tell you for sure.

 

[Mikedin]

Leaf septoria? @Sunin @Mikedin
Looks like some kind of fungal infection but not sure if powdery mildew or leaf septoria. My vision is not very good but that doesnt look like bugs to me. I might be wrong lets see what people has to say.
Are you meassuring your PH? The only other thing that occurs to me is a deficiency caused by nutrient a lockout but never seen it like that.

I agree it looks almost fungal, either that or it some type of feces from whatever bug is around, but too me that’s looking like some sort of fungal growth maybe mixed with PM

Not sure about septoria the tiny specs broadly across the leaf looks like thrip damage, it’s a conundrum

Septoria usually has more of a yellow apprance on the leaves vs that silvery color that trips leave