Is this an aphid issue or something else?
What should i do to resolve? I can attach pictures if necessary.
Rob, ZONE 6A with 170 days between frost dates, Western Pennsylvania
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So I wouldn't discount getting the peppers some daylight as a preventive of more of this - it won't cure what is already damaged. But they will recover when they get outdoors.
Another way to test if it's insects or not: remove one of the affected leaves and place it in a jar covered with a couple layers of cheesecloth, that would prevent small insects from flying out but would allow enough air in there for them to hatch out of the "eggs" if such they are. Week or two max to get a result. If no insects, edema is a likely bet.
If you have any fungus gnats, I would take that seriously as they can really damage the roots of your plants if allowed to multiply. Mosquito bits or dunks of Bt-i is the solution to that. You can soak a dunk and then water the plants with it, but must repeat a few times since it is most effective on one of the larval stages. Use a yellow sticky trap on the rim of the pot to catch adults - this also helps to monitor their population. Just one female can lay a lot of eggs though, so don't delay watering with the dunks if any are flying about.
The yellow sticky trap might also catch a mystery pest, if it exists.
temperate marine climate
yearly precip 61 inches/1550 mm
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