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1
vote
1answer
220 views

What is causing these dark spots on my bonsai tree?

My Cussonia bonsai suffers for a couple of months now from an unrecognized pest. First I thought these are mites, so I bought a powder that you mix with water and spray on the leaves. But ...
5
votes
1answer
405 views

How to get rid of spider mites on roses?

My girlfriend got a rose to sprout and then planted. It grew nicely but now spider mites are coming back all the time. She tried a BAYER spray for mite control but they are coming back every time she ...
8
votes
2answers
473 views

Best practice to prevent aphids and spider mites?

What is the best practice to prevent aphids and spider mites? I group them in one question because they make similar damage to plants. I want to know the level of humidity for aphids and spider mites ...