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hoosier_bob

Problems with scale

Members,

Indiana grower here. I have a major problem with scale right now and need advice. First, which scale is this? I am posting two pictures with different posts. I thought I had controlled it with a Malathion dip last summer, but now find it has spread to many new plants, which are all crowded together in my greenhouse. I can't tell the dead scale from the active ones, so it's hard to know what's effective.

Can anyone tell me if Malathion is good for controlling scale, and if so, how much and how often? I put some Bonide systemic (imidacloprid) in the cups of several plants this fall, but it looks like I damaged them. Should this go in the cups or only in the soil? How long will it take to work?

Any advice would be appreciated. Bob

This post was edited by hoosierbob on Mon, Dec 22, 14 at 19:22

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