• slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide

European Pine Sawfly

Protect pine trees from the voracious European pine sawfly with some environmentally friendly controls.

This worm-like insect has a black head and gray body with darker stripes. The adult is a fly-like insect that lays eggs in the pine needles in fall.

The eggs hatch and larvae begin feeding about the same time the Amelanchiers are in full bloom and the redbuds are just beginning to flower.

The larvae feed in large groups and rear their heads when disturbed. Their initial feeding turns the previous season’s growth light brown. Once mature, the larvae devour the needles completely.

Try dislodging the larvae with a strong blast of water. Or prune out the insect-infested branch if it won’t ruin the plant’s appearance.

Organic insecticidal soap and Summit Year-Round Spray Oil can be used. These are most effective when treating young larvae.

A bit more information: Another control option is to don a leather glove, run it along the stem to dislodge and smash the European pine sawfly larvae. DO NOT use Bacillus thuringiensis kurstaki (Btk) as it only kills true caterpillars not sawfly larvae.

Related

Upcoming Webinars & Appearances


August 4 - 14
Wisconsin State Fair

CLICK HERE for additional information on Melinda's presentation topics

Sept. 10
Pasquesi Home & Gardens

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


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
The Great Courses' How to Grow Anything: Make Your Trees and Shrubs Thrive DVD set

ENTER NOW