Strange white spots only on edges of leaves

  • Thread starter Mooselee2
  • Start date
  • Tagged users None
M

Mooselee2

6
3
Grow Info
- soil, ffox with 20%extra perlite
- plants are 5 weeks old from seeds
- water pH is 6.5.
- run off is 6.4
- ppp of run off in 1000ish
- mars hydro TS 3000 450 wats
- light 24 inches from plants
- using ff trio as nutes. Just started 1 week ago.
- spray once every other week with mammoth canna control for mildew, mold, and bug
- growing in a tent outside my house

Issue

I am seeing white dots on two of my four plants. The spots only appear at the edges of the leaves. They appear on both the new and old leaves in small quantities. Maybe 20ish on each plant. I snapped a photo as close as I could. They looks like white rocks close up.

I'm thinking they are some sort of bug eggs, but I'm not sure what kind. They look sorta like fungus gnat eggs but I think those are supposed to be laid in the soil. I have Yellow sticky strips in the tent, and haven't seen what looks like a fungus nat - just spring tails, a few mosquitos, moths, and a pincher bug. I've also seen a house fly in there a few times.

I am pretty sure they aren't spider mite eggs. They don't look like them and I've check both the top and underside of my leaves with a jeweler's crown and I can't find any sign of mites.

Could it be some kind of mold? It doesn't look like PM to me.

Any ideas?
 
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ComfortablyNumb

ComfortablyNumb

5,770
313
Nute burn. Looks weird but its normal. Just make sure it doesn't starting eating more than a small amount of tip. Then it needs attention.
The bottom picture looks like a spider mite. Whip out the stuff and let'em have it. 3 treatments, 3 days apart.
 
PlantTherapy
mysticepipedon

mysticepipedon

3,049
263
Nute burn shows up at the tip of the leaf, so I think it's something else.

Does this white stuff come off? It almost looks like some sort of solution dried on the leaf teeth.
 
ComfortablyNumb

ComfortablyNumb

5,770
313
I'm thinking his pix are fuzzy and difficult to tell, but what I propose will also handle molds.
 
M

Mooselee2

6
3
Nute burn shows up at the tip of the leaf, so I think it's something else.

Does this white stuff come off? It almost looks like some sort of solution dried on the leaf teeth.
The white stuff does come off fairly easy and doesn't seem to leave any negative impact on the leaf behind. It's possible it's dried residue from my anti mold/bug spray but I'm not sure that is it.
 
M

Mooselee2

6
3
Nute burn. Looks weird but its normal. Just make sure it doesn't starting eating more than a small amount of tip. Then it needs attention.
The bottom picture looks like a spider mite. Whip out the stuff and let'em have it. 3 treatments, 3 days apart.
Thanks for the feedback. I am not sure it's nute burn. I've never seen white nute burn and it appears to be something attached to the leach rather than something wrong with the leaf. I could be mistaken though
 
M

Mooselee2

6
3
The white specks on the leaves look awfully similar to really tiny pieces of perlite, which I have plenty of on my top soil. I wonder if it's possible that little pieces ended up getting blown around the tent and they stuck to the ends of the leaves when they were wet after being sprayed for bugs. I don't know just an idea
 
ComfortablyNumb

ComfortablyNumb

5,770
313
The white specks on the leaves look awfully similar to really tiny pieces of perlite, which I have plenty of on my top soil. I wonder if it's possible that little pieces ended up getting blown around the tent and they stuck to the ends of the leaves when they were wet after being sprayed for bugs. I don't know just an idea
That's very possible.
 
M

Mooselee2

6
3
That's very possible.
I just cleared out my tent and sprayed it top to bottom with the mold, mildew, and bug spray I have. I sprayed my plants too and tried to carefully clean the leaves.

I pruned some of the bottom fan leaves as they were no longer needed. I did a close inspection with a jewelers crown and couldn't find any signs of mites, thrips, or other common bugs that are bad for cannabis plants.

I took as clear a photo of the white spots as my phone seems capable of. They are

I still have no idea what it is. It sorta looks like crushed up perlite, it sorta looks like PM, it sorta looks like Fungus Gnat eggs, it sorta looks like spider mite cast skins, etc. But nothing is fitting 100%.

If it's PM, why is it only on the edges of the leaves. If it's crushed up perlite, why can't I find any other grow report of that happening and why would it only be on the edges of the leaves. If it's Fungus Gnat eggs why are they on the plants and not in the soil, if it's spider mite cast skins why can't I find any spider mites or spider mite eggs.

Very weird. I'm starting to think it's just some sort of residue from my spray or maybe it is crushed up perlite.

I think I'm going to buy the lost coast plant therapy you mentioned.
 
IMG 20211130 140941835
growboy420

growboy420

21
3
Grow Info
- soil, ffox with 20%extra perlite
- plants are 5 weeks old from seeds
- water pH is 6.5.
- run off is 6.4
- ppp of run off in 1000ish
- mars hydro TS 3000 450 wats
- light 24 inches from plants
- using ff trio as nutes. Just started 1 week ago.
- spray once every other week with mammoth canna control for mildew, mold, and bug
- growing in a tent outside my house

Issue

I am seeing white dots on two of my four plants. The spots only appear at the edges of the leaves. They appear on both the new and old leaves in small quantities. Maybe 20ish on each plant. I snapped a photo as close as I could. They looks like white rocks close up.

I'm thinking they are some sort of bug eggs, but I'm not sure what kind. They look sorta like fungus gnat eggs but I think those are supposed to be laid in the soil. I have Yellow sticky strips in the tent, and haven't seen what looks like a fungus nat - just spring tails, a few mosquitos, moths, and a pincher bug. I've also seen a house fly in there a few times.

I am pretty sure they aren't spider mite eggs. They don't look like them and I've check both the top and underside of my leaves with a jeweler's crown and I can't find any sign of mites.

Could it be some kind of mold? It doesn't look like PM to me.

Any ideas?
Leaf mould of some sort..if no bites out of leaves..Humidity is too high in room/ tent..knock it down to 20-25% and leave it there. Weed doesn't need high humidity unless cloning...also stop spraying your plants period ..that looks like house mould from concrete..if the tent changes temps back and forth the condensate will wet the leaves...more fan less spraying.
 

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