the leaves are starting to curl up. the back of the leaves have purple like spots on the back. i see no noticable insects.any suggestions.thanks

What part of your garden do your impatiens live in? In my part of the world (Dallas, Texas), the sun and heat get so fierce that impatiens don't survive unless they are in the shadiest part of the garden. It may be that your flowers are just getting too hot.

I have the same problem with double impatients in pots on my shaded front porch. I thought it might be slugs. so I put copper tape around the pots. I haven't seen anymore slugs, but I still have the problem.

It's the unending heat!

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...Bill