round holes in squash leaves - Knowledgebase Question

College Place, Wa
Question by pennie1
June 18, 2010
with no insects or pests in sight this afternoon--HELP! What's eating the leaves and what nontoxic thing can I do about it?

Answer from NGA
June 18, 2010


Lots of insects can munch on the leaves of your squash plants. Sometimes they come into the garden, feed and then move on. There's no point in applying an insecticide if the insects are already gone and the damage is already done. On the other hand, you may have night feeders such as slugs or snails. They aren't particularly fond of hairy leaves such as are on your squash plants, but if the competition for food is high, they'll munch on whatever is available. You'll have to put on your detective cap and go out several times a day, from early morning to dusk to find the culprits. Once you do, you can choose the most effective, least toxic control method. This may simply mean handpicking the pests or using something like Dipel for caterpillars, Rotenone for beetles or Sluggo for slugs and snails. Good luck with your squash plants.

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