Diseased Plum Tree

We have a couple of european prune plum trees in our yard and they’ve been attacked by a small white bug. It almost looks like dust/ash until you come closer and see… they are leaving an oily film on the…

Flies on Astilbe

I have a new pink Astilbe spirea this year and noticed small flies on the flower.  Is this normal or do I have to spray the bush? I live in Ottawa, Ontario which is Zone 4 or 5.  My plant…