Squash Vine Borer – How to control

Shade Potting Mix


Vine Borer

Description: White larva with brown head, up to 1″ long.

Preferred foods: pumpkin, squash, cantaloupe, cucumber

and gourd vines. A small pile of “sawdust” where the

vine meets the soil is a sure sign that you have squash

vine borers. Once you notice the first “sawdust,” it

will not be long until the leaves wilt and the vine

dies. Standard procedure is to slit the base of the

vine with a razor blade and try to extract the borer

larvae, but expect reduced vine size and productivity.

Solution: When vines

start to run, dust weekly 5 or 6 times with Rotenone/Copper Combo. If borers

have already entered the vine, instead of slitting the

vine, use a garden syringe to inject Grub-Away Nematodes at 4″ intervals

over the first 3 ft. of vine, 5,000 nematodes per injection.

Adult moths lay eggs from late June to early August;

covering with a Super-Light Insect Barrier during

this time will significantly reduce borer damage. (Pull

back cover to allow for pollination.)


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