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White spots on underside of leaves

Posted by lithven none (My Page) on
Tue, Oct 2, 12 at 21:04

Hello all,

I'm hoping someone can help me identify the cause of / correct an issue I have where the underside of the leaves on my cayenne pepper plant has a lot of small (pin point size) white spots / bumps. The plant is growing in a pot indoors. I also have some habanero peppers grow next to the cayenne plant and they seem to be getting some similar spots, but not quite as bad yet.

Any ideas? Thanks.

Follow-Up Postings:

RE: White spots on underside of leaves

for what its worth.. it looks like aphids ... hard to tell at that magnification ...

google such.. and see if you can confirm or deny


RE: White spots on underside of leaves

Let's have some more details....if they are aphids, they will be very squishable. Are they? Does it brush away with your fingers? What's it taste like? (just kidding on that one)

If this was a picture of impatiens, I'd say that we were looking at an early case of Downy Mildew. I don't how that disease presents itself on pepper.

RE: White spots on underside of leaves

Thanks for the input so far. It doesn't move and doesn't brush off. If plants got goose bumps or rashes that would be how I'd describe it. That's how it feels and looks. Another way to describe it would be like if someone ran a perforation tool over the leaves.

Thanks for any other advice.

RE: White spots on underside of leaves

I urge you to contact your extension office for help on this. Do you know where your county office is? I'd suggest that you call the office and ask if you can email your images directly to the university diagnostic clinic. With Extension budgets slashed over the years, you never know who might be on call to answer questions.

I suspect that these are calcium oxalate crystals, reported in literature for peppers.

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