• slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
Columbine-Leafminer-THUMB.jpg

Columbine Leafminer

The leaves of my columbine have white streaks. The plant flowered and seems to be doing fine.

Columbine leafminer is the culprit. A fly like insect lays its eggs on the leaf surface. The egg hatches and a worm-like insect enters the leaf feeding between the upper and lower leaf surfaces. The plants tolerate the damage though they can become unsightly. Since the damage is done for the season there is no need or benefit from chemical treatment. After flowering you can cut back the foliage of badly damaged plants. The new leaves will be fresh and damage free for the remainder of the season.

Related

Upcoming Live Events
& Webinars


Feb. 12, 2025
FREE WEBINAR:
Organic Insect Pest Management for Vegetable and Flower Gardens

Register here

Feb. 14-16, 2025
NARI Milwaukee Spring Home Improvement Show
West Allis, WI

Feb. 19, 2025
FREE WEBINAR:
Strategies for Managing Invasive Plants

Register here

Feb. 26, 2025
FREE WEBINAR:
Create a Beautiful Shade Garden

Register here

Feb. 27, 2025
FREE WEBINAR:
How to Select Rain Garden Plants

Register here

March 12, 2025
FREE WEBINAR:
Grow Pollinator-friendly Spring and Summer Flowering Bulbs

Register here

March 19, 2025
FREE WEBINAR:
Be a Waterwise Gardener
Register here


March 22, 23, 29, 30, 2025
REALTORS Home & Garden Show
West Allis, WI

March 26, 2025
FREE WEBINAR:
Succession Planting & Crop Rotation

Register here

March 27, 2025
FREE WEBINAR:
Rain Garden Q & A

Register here

April 2, 2025
FREE WEBINAR:
Container Gardens for Sun & Shade
Register here


April 10, 2025
FREE WEBINAR:
Reinvigorate Your Rain Garden
Register here


May 7, 2025
FREE WEBINAR:
Vertical Gardening
Register here


May 15, 2025
FREE WEBINAR:
7 Steps to Managing Water on Your Property

Register here

June 4, 2025
FREE WEBINAR:
Attracting Hummingbirds

Register here

WATCH ON-DEMAND WEBINARS

Learn More

Book an Appearance

Learn More

Enter to Win 3 Collections of Longfield Gardens
Dahlia Bulbs

ENTER NOW