Ask a Question forum: Hibiscus leaves yellowing

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Feb 28, 2017 9:12 AM CST
Good morning,

I've got a hardy habiscus indoors for the winter and I've noticed that many leaves are yellowing and falling off. I think that I may have spider mites. I've been spraying it with earth tone insecticidal soap. It doesn't seem to be working. In the first picture you can see what appears to be small black dots. I think they are bugs. In the second picture the leaf looks like it's been pierced and the insides. sucked out in several spots. Apparently that's what they do... the thing is that I can't find anywhere that says spider mites are black. Everything I've red said they are supposed to be brown or reddish. I know I used to have aphids too but that seems to have gone away. Any help would be appreciated.
Thumb of 2017-02-28/rolandstronghammer/da1f4e
Thumb of 2017-02-28/rolandstronghammer/bf5a56

Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Mar 2, 2017 11:52 AM CST
Roland - yeah, most mites are red/brown but lots of different species. It does look like mite damage on the leaves. On the second picture, is that a very fine web to the left of the pruned branch stub? I do get spider mites on some plants over the winter. Mites like dry, warm environments. I do use Azamax (a derivative of neem) on my plants - lemon trees, begonias, etc - every couple of weeks and it seems to keep them under control. It doesn't kill on contact but disrupts their systems when they try to consume the foliage.
Only when the last tree has died and the last river has been poisoned and the last fish has been caught will we realize that we can't eat money. Cree proverb

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