Coreopsis (and Company) in the Cottage Garden

Coreopsis 'Star Cluster' in bloom with companions
Eucomis 'Sparkling Burgundy' (foliage left)
 echinacea (multiple varieties back)
 and purple phlox 'Nicky'.
Three plants of Coreopsis 'Star Cluster' PPAF were added to my cottage garden in 2011. I was so impressed by the performance and beauty of this coreopsis, that I purchased five more plants this spring.

This 2010 introduction in the Big Bang ™ series is from Darrell Probst. For several years, I've happily grown his taller Coreopsis 'Red Shift' in the deer resistant meadow garden. 'Star Cluster' is shorter at 18-14 inches high and wide, making it more suitable for the scale of my cottage garden.

Coneflowers and Aster Yellows Disease

These "green" disfigured coneflowers were removed and destroyed.
I didn't plant any new "green bloom" echinacea cultivars, so what's wrong with a few of my coneflowers? While most of the coneflowers in my garden are blooming and thriving, I watched three delinquent clumps and wondered:

Did voles eat the roots? No
Are they getting shaded out by the other plants? No
Is it aster yellows disease? Yes

As difficult as it is, there's nothing to be done except to remove and destroy infected coneflowers to keep the disease from spreading by leafhoppers feeding on the plants.  Out with the bad to save the good.
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