But as their petals turn upwards, like a spider ... allow it to go to seed (and subsequently self-sow). 'Green Envy,' a cultivar of purple coneflower (Echinacea purpurea), is sure to surprise ...
Read more: Think Twice Before Using These Items In Your Yard Coneflowers' foliage and stems are often colonized by minute, soft-bodied aphids, such as brown ambrosia and green peach, though the ...
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