Brown spots on leaf. Please help.

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Dipcanna15

Dipcanna15

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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.
 
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mysticepipedon

mysticepipedon

3,394
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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

Flexnerb

1,289
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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

Dipcanna15

12
3
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

Flexnerb

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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

ComfortablyNumb

5,773
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It looks like fungus gnat bites.
Anything flying around inside your grow?
 
Dipcanna15

Dipcanna15

12
3
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

ComfortablyNumb

5,773
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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;
 
PlantTherapy
growsince79

growsince79

8,299
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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

ComfortablyNumb

5,773
313
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

Flexnerb

1,289
163
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

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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
 
Kanashiihawk63

Kanashiihawk63

Supporter
72
33
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.
OK, I just had this very same thing happen to me. I would classify myself as an intermediary +/ indoor soil grower/gardener. I popped and planted 4 feminized GOD'S GIFT seeds (from ILGM) one of the plants in week 3 of veg began to show these SAME exact spots as the photo. The other the plants were fine. The plant continued to grow alongside her sisters...New (fan) leaves were fine for a few days and then slowly began to develop "dalmatian like brown spots" and I scoured the internet for probably hundreds of hours looking up ever deficiency pest etc... So, I cloned the plants. And... clones from the 3 non-spotted sister developed just fine, and clones from the "spotted" Gods Gift. at first seemed to NOT have it...but within week 3.5..the same rusty red spots. The plant(s) seemed fine, it didn't affect the flower/bloom cycle. The final product had plenty of "punch" and performed as the "Gods Gift" strain should.... I KICK myself for not having photographed it, especially since I had NEVER seen it again until now... (because what I had was not variegated- it was a genetic rusty brown spot that only effected leaves and blooms and stems were unaffected in any way (sugar leaves were unaffected too). The clones from the dalmatian mother proved to be just as good at yield and harvest as the unaffected Gods Gifts. I chalk it up to a genetic "freckle" phenotype that (so far) appears non-lethal. I only say GENETIC because I germinated 3 other seeds and grew all plants (mothers and clone daughters) in their same respective tents AND there was plenty of intermingling between the mother plants and clones, so if it were an external factor (parasite/virus/light issue/mold/bacterium/etc) then it would have shown up on the other Gods Gifts as well.
Warmly,
Jackie
 

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