• slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
Deformed-Coneflowers.jpg

Deformed Coneflowers

My purple coneflowers look funny this summer. The petals are green and deformed.

Malformed, stunted or green flowers and excessively spindly or bushy growth is usually the result of aster yellows. This phytoplasm attacks over 300 species of plants and is often seen on daisy, dianthus, gladiolus, marigold, petunia, phlox, zinnia, snapdragon, chrysanthemum, tomato, carrot, onion, lettuce, dandelions, plantain, thistles as well as purple coneflower. This tiny disease organism is carried from one plant to another in the saliva of aster leafhoppers. There is no cure for this disease and it is best to remove and destroy infected plants. Controlling the aster leafhoppers with insecticidal soap, Neem or another eco-friendly insecticide labeled for controlling leafhoppers will help limit further spread of the disease.

Related

Upcoming Webinars & Appearances


Sept. 24
Ebert's Greenhouse Village

Sept. 25
Historic Milwaukee Doors Open
at Sanger House Gardens

Oct. 14-16
NARI Milwaukee
Home & Remodeling Show

Oct. 26

Webinar: Year-round Perennial
Garden Maintenance


Nov. 2
Webinar: Boosting the Beauty of
and Propagating Houseplants


June 3 – 11, 2023
“Castles & Gardens” Adventure in Ireland with Melinda Myers
Includes the Bloom Festival in Dublin!

CLICK HERE for more information on Melinda's 2022 Wisconsin State Fair presentations on
Affordable Food Gardening 

CLICK HERE for pollinator gardening webinars, videos & DIY projects

Watch Melinda's past webinars ON DEMAND

Learn More

Book an Appearance

Learn More

Enter to Win
a Corona Tools
Hori Hori Knife!

ENTER NOW