Squash bugs/squash vine borer preventatives

Jul4

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 bug

Squash bugs
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

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.

How to control squash bugs

Aug11

Squash bug adult-photo courtesy University of Minnesota

Well it’s that time of year-Squash bugs Ughh! You can control squash bugs in your organic garden. Here are some ORGANIC things you can do to deter squash bugs:

-Plant a crop late in the season if possible. Many areas of the country only have one generation of squash bugs and if you plant later you may miss them. If you live in the south where they have 2 generations, read on..

squash bug nymphs-photo courtesy University of Minnesota

–Cover your plants with row cover to keep them off. This works beautifully but you may have to piece some row covers together to cover some of the larger plants. I use clothes pins to clip them together.

-Use Neem. It is an organic pesticide (and an added benefit is a fungicide). It must be sprayed very early before the bees come out or at dusk when they aren’t around as it won’t hurt them if it is not a direct hit as they only visit the flowers and it is a contact spray. I think it mostly helps deter the squash bug.

squash bug eggs

-Inspection, hand picking and kill the little buggars. (now you know how strongly I feel about them) By far the most labor intensive but very effective. I hate to handle squash bugs (or any bug-I’m squeamish) so I use gloves, a bucket of soapy water (it drowns them) and inspect each leaf underneath to look for nymphs, eggs, or adults. The adults I throw in the soapy water and if a leaf is really loaded with nymphs, I cut it off and throw it in the soapy water otherwise I just squish them. For the eggs (they are a cluster of rust colored eggs attached to the underneath side of the leaves) I usually just tear off or cut out that portion of the leaf (it won’t hurt it) and throw them into the soapy water. The key to keeping it under control, is to catch them before they multiply too much. I looked up the life cycle online of the squash but and it goes from egg to nymph in 7-10 days so if you get out there every 7 days you will catch them before they get out of control and multiply. Most people wait too late. Get out there and look at your plants!

-Companion planting. I think it was in ‘Organic Gardening Magazine that I read under ‘letter to the editors’, that a lady wrote in to say that you could deter squash bugs on pumpkins, winter squash, summer squash and marrows with diluted/strained onion juice. Evidently just grind one or two up, put it in gallon of water and strain the onions out so your sprayer doesn’t clog. Well she went on to write that doing that was too much work and she plants onions bulbs with her squash every year and hasn’t seen a squash bug since. Well I did the same for my summer squashes, but not for my winter squashes. There have been no squash bugs on the summer squash but I found one on the marrow which means there will be more. I told one of friends that owns a garden nursery about the onions and he said it was too late to plant onions but he was going to throw some chopped onions out in his patch. I’m doing the same today for the marrow and winter squash and will let you know what happens! It can’t hurt and maybe it’ll work!