Aster yellows or erythroid mites?

Hi master gardeners, I have 9 Green Twister echinacea plants which I planted last fall. They all came up just fine initially, with the flowers looking as a normal coneflower should. However, in the last couple of months or so,…

Coneflower

I recently bought 2 potted coneflowers in April. One already had 2 fully bloomed flowers when i bought the container. They would wilt during the day and get better in cooler evenings/overnight. I thought it needs to be transplanted, so…

Overwintering coneflowers

I live in Toronto zone 6 and I was wondering how to protect my new coneflowers that I recently planted. Since their roots haven’t had time to get established yet I was wondering if I could cover them with styrofoam…