What are these white spots on my leaves?

[ddumbly]

I've recently noticed these white spots on some leaves on my GG#4 plants. It doesn't look like PWM to me - looks almost like residue left after they got wet and dried. However, they haven't been wet...

Thoughts?


Here is some info on my grow:
Strain(s

• ): Gorilla Glue #4 (Archive Seeds)
• Grow medium - Organic Black Gold soil
• Light size & type - Outdoor: Northern Oregon. Direct sun Morning through late afternoon.
• Pot size and type or hydroponic set-up type - 8-ish gallon pots
• Nutrient type and schedule: 4-5-3 EB Stone Fertilizer and worm castings every 3ish weeks through vegetative. Repotted last week. Two days ago, I gave them each 1 cup of bat guano (0-13-0), 1/2 cup KMAG Trio (Potassium, Magnesium, Sulfur 0-0-22), 1/2 cup kelp meal (0-0-2), 1/2 cup Fish Bone Meal (4-17-0)
• Watering schedule and pH of your runoff or reservoir water - Watered every other day or so. Never let them get super dry. pH of run-off last checked

- 6.5


Schedule:
Planted 5/11
Topped 6/3
Initial Flowering: 7/4-ish
Thinned 7/20
Repotted 8/13
Full Flowering 8/18

 

[AgentPothead]

I don't know what that is, but I agree it looks like residue left from water evaporating.

 

[Noonin NorCal]

Have you sprayed anything on them? Ive noticed that on a few of my leaves also. I also noticed bird shit on a few plants

 

[Noonin NorCal]

Now that i look closer at the second picture, i noticed 2 black dots. That look like resin or something? i have some of that going on also

 

[ddumbly]

Have you sprayed anything on them? Ive noticed that on a few of my leaves also. I also noticed bird shit on a few plants

I sprayed neem on them probably a month ago, but nothing since then. Very interesting.

 

[wildkender]

bird sperm!

Original Glue #4 (Archive Seeds)

Archive sells GG4 fem seeds?

 

[ddumbly]

bird sperm!

Original Glue #4 (Archive Seeds)

Archive sells GG4 fem seeds?

Seriously - Bird Sperm?

Apologies - I got them as clones at Archive in Portland.

 

[Ecuaweed]

I got the same problem. Mine are seedlings on dwc on week 2. I dont know how to cure them. Thought it was the high ph, then the strong lighting. Please help

 

[Douglas.Curtis]

I vaguely remember seeing something like that once. Not really sure what it is but I'm guessing it's bug related.

I DO know you have bugs of some sort, like root aphids, gnats, white flies, mites or something. The leaf at the bottom of the second photo has bug 'spots' on it. Something is either eating the underside of the leaf, or it's eating the root which feeds that leaf.

 

[MrBungle]

does it wipe off?


looks like nutrient residual or bird droppings as said earlier.. I'd monitor it and if it starts to spread, look for other possible clues

 

[zifozonke]

I agree it could be bird poop...get it often on my outdoor plants...does not affect them in any way (except for maybe some added nutrients)otherwise normally just dissapears after rain....