Is this rust fungus?

[RIS]

I found a couple spots like this in my plants. My assumption is that this is rust fungus. It’s only affecting a couple of leaves on different plants.
Can anybody confirm this is truly rust fungus?

Edit: I put this in the wrong spot, sorry, this should be in the plant problems sub forum

 

[Red Hard Head]

Unlikely. Ive not heard of cannabis being susceptible to rust fungus.
Looks necrotic that spot. The leaf itself is showing early nutrient deficiencies. Potassium and calcium deficiencies can become necrotic.
The shape of the spot also suggests possible foliar burn from a spray maybe.
More info needed rule out differential diagnosis of anything.

 

[Boatguy]

What strain is that? The smooth leaves look reveg like.

 

[RIS]

What strain is that? The smooth leaves look reveg like.

They attempted to flower early and are going back to veg. Gelato 33 is the strain.

 

[Boatguy]

They attempted to flower early and are going back to veg. Gelato 33 is the strain.

I think you are fine. You should wait till you see normal growth again before you worry about random dead spots

 

[RIS]

I think you are fine. You should wait till you see normal growth again before you worry about random dead spots

Sounds like a plan. Thank you all

 

[harrychilds]

I don't know the problem but your leaves almost look like a re-veg, although it's probably not. If you can provide more information I could probably diagnose your problem. Are you in coco? Soil? what is your PH? your EC? temps? Humidity? There is a lot of info missing for me to even begin to start to help you. How old are you plants? are they in veg or flower?

 

[Boatguy]

I don't know the problem but your leaves almost look like a re-veg, although it's probably not. If you can provide more information I could probably diagnose your problem. Are you in coco? Soil? what is your PH? your EC? temps? Humidity? There is a lot of info missing for me to even begin to start to help you. How old are you plants? are they in veg or flower?

You should read the thread

 

[harrychilds]

You should read the thread

Oh yeah, sorry man. My bad. I only looked at the top post

 

[Fresh2death88]

If the rust spots under your leaves rub off on your finger it’s fungus. If not it’s either a cal/mag def or lock out