• slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
Beetles-Damaging-Asparagus-Plants---THUMB.jpg

Beetles Damaging Asparagus Plants

The stems of my asparagus have black marks, some stems wilt and others turn brown. I have found a few beetles crawling on the plants. Are they causing the problem?

Yes. Both the common and spotted asparagus beetle can cause the damage you describe. They begin feeding as the plants emerge in spring and produce a second generation that feeds on the greenery and cause defoliation. Control these pests by handpicking and dropping the beetles and their worm-like larvae into a container of soapy water. Use insecticides as a last option. These chemicals also kill the parasitic wasp that helps control these pests. Handpicking along with fall cleanup is usually sufficient to minimize damage in small gardens.

Related

Upcoming Appearances


June 22, 2021
Low Growing Shrubs & Vines
to Attract Pollinators

Webinar

July 17, 2021
Shade Gardening Seminar &
Sanger House Gardens Tour

In-person event

July 18, 2021
Drought Tolerant Perennials & Shrubs for Southeastern Wisconsin
In-person event

July 20, 2021
"Ask the Plant Doctor"
Question & Answer Session 

Webinar

July 24, 2021
Lake Country Art & Garden Tour
In-person event

Register today! Plus, watch Melinda's past webinars ON DEMAND
for a limited time.

Learn More

Book an Appearance

Learn More

Enter to win 3 bags of Wool Pellets and reduce watering by up to 25%!

ENTER NOW