Brown spots on leaf. Please help.

[Dipcanna15]

Hey guys needing help with one of two plants showing issues. It's in week 4 of flowering and seems to be flowering great but I have noticed these rust looking brown spots on the leaves. This is the only plant out of my six that is having this issue. Could this be some kind of deficiency. I'm growing in my own organic compost soil and feeding with a 3 part nutrient from blue planet. The leaves are still growing upwards toward the light and looks a healthy green except for the spots. This issue started a couple weeks ago. Haven't really noticed and bugs in room maybe one gnat the whole time, have quite a few traps set around room. Any help would be very appreciated.

 

[mysticepipedon]

Check the undersides of the leaves with a hand lens. I think you have mites. Note how they tend to run along a vein? That's where spider mites like to hang out.

 

[Flexnerb]

Hey guys needing help with one of two plants showing issues. It's in week 4 of flowering and seems to be flowering great but I have noticed these rust looking brown spots on the leaves. This is the only plant out of my six that is having this issue. Could this be some kind of deficiency. I'm growing in my own organic compost soil and feeding with a 3 part nutrient from blue planet. The leaves are still growing upwards toward the light and looks a healthy green except for the spots. This issue started a couple weeks ago. Haven't really noticed and bugs in room maybe one gnat the whole time, have quite a few traps set around room. Any help would be very appreciated.

Are you getting the yield you got last time at this point in the grow?

 

[Dipcanna15]

Are you getting the yield you got last time at this point in the grow?

This is actually my first grow but so far these buds on this plant are bigger and more developed than any other plant I have. They smell really great too. These spots aren't on all my leaves just a few so far.

 

[Flexnerb]

This is actually my first grow but so far these buds on this plant are bigger and more developed than any other plant I have. They smell really great too. These spots aren't on all my leaves just a few so far.

Get a 60 to 120 power scope. Look for bugs...

 

[ComfortablyNumb]

It looks like fungus gnat bites.
Anything flying around inside your grow?

 

[ComfortablyNumb]

Get a 60 to 120 power scope. Look for bugs...

Make it a1000x scope.

 

[growsince79]

It looks like fungus gnat bites.
Anything flying around inside your grow?

Never even heard of fungus gnats causing leaf damage. Even a huge infestation won't hurt the leaf. But the larvae can attack roots.

 

[ComfortablyNumb]

Evidence.

 

[growsince79]

The leaf damage here is from root damage causing uptake problems- not gnat bites. Also the OP didn't see any bugs.





View all



Adult fungus gnats don't damage plants or bite people; their presence is primarily considered a nuisance. ... Serious fungus gnat damage is more common in greenhouses, nurseries, and sod farms. Although larvae also feed on plant roots outdoors, they don't usually cause serious damage.

 

[ComfortablyNumb]

Fungus Gnat Plant Damage

There are also parasitic nematodes that attack fungus gnat larvae although this product is. Its not just free of harmful pesticides and che...

plantgardenbugs.blogspot.com

 

[Dipcanna15]

I'm going to order a scope today and I haven't really seen any bugs at all. But if this is the issue would a folier spray help the issue? Even with me being this late into flower.

 

[ComfortablyNumb]

If it is bugs, then you're covered.

In the meantime, go stir the soil and see if anything flies out. If nothing, you're good. If you see them then;

 

[growsince79]

If it is bugs, then you're covered.

In the meantime, go stir the soil and see if anything flies out. If nothing, you're good. If you see them then;

I know its organic and probably won't hurt you, but hows it taste on a joint? I'm a high maintenance smoker. I don't spray my buds with anything-ever. I'd rather throw it away.

 

[ComfortablyNumb]

I know its organic and probably won't hurt you, but hows it taste on a joint? I'm a high maintenance smoker. I don't spray my buds with anything-ever. I'd rather throw it away.

What taste? 10 minutes after spraying, you rinse it off. No taste.

 

[Flexnerb]

View attachment 1141372
The leaf damage here is from root damage causing uptake problems- not gnat bites. Also the OP didn't see any bugs.
View attachment 1141373
View attachment 1141374

View all



Adult fungus gnats don't damage plants or bite people; their presence is primarily considered a nuisance. ... Serious fungus gnat damage is more common in greenhouses, nurseries, and sod farms. Although larvae also feed on plant roots outdoors, they don't usually cause serious damage.

Yes they cause those red and blue wires to grow inside you man, jk

 

[Aqua Man]

Imo always identify the pest before trying to treat it.

 

[Skunk199]

If it isn’t pest, it’s a magnesium deficiency