I get a lot of questions about how to control squash bugs. They are a veggie gardener’s nemesis. I have read and tried several things and think a few help. Here’s a list of things you might try to control squash bugs and squash vine borers.
Squash bugs attack both summer and winter squash. They pierce it and suck out the juices. If left unchecked, they can take over and destroy the plant. The key to control is catching them right away. Here are some thing s to try:
-Plant onions around squash to help repeal them. I planted little sets around the squash last year and I got a few but not a lot. Very controllable.
-Make an onion spray to put on leaves. Fill blender with water and add a couple of onions. Blend onions and let them sit overnight. Strain onions out and put in sprayer to spray squash plants.
-Put row cover over young plants till they flower, then remove so they can get pollinated.
-Hand pick every 7 days and remove eggs, nymphs and adults from leaves. Put in bucket of soapy water. Then cover plants again with row cover. Squash bugs life cycle from egg to nymph is 7-10 days so keep ahead of them.
-Spray Neem Oil on squash when you have to keep them uncovered for pollination. Neem is an effective repellant.
-Plant late like the first couple of weeks of July-you may miss their lifecycle.
-Rotate squash into different beds, They may not find you. First time squash growers generally get the first year free of squash bugs. Afterward the bugs find you and the battle is on.
Squash Vine Borer
This bug is not suppose to be west of the Rocky Mountains and yet it has been seen around here damaging and killing squash plants. It likes to bore into the main stem around the base of the plant to lay its eggs which then turn ito larvae inside the vine and eat it from the inside. Look for sawdust like particles around base if plant suddenly wilts. You can try to slit the vine parallel (not across it) and dig out the grub and then tape the wound shut. It may survive. Here are some things to try:
-Once again cover them until pollination needs to happen.
-Wrap aluminum foil around the base of the vine for about 12 inches to keep them from attacking it.
-Also bury the vine with dirt or mud covering the main vine.