Return to the Fruit & Orchards Forum | Post a Follow-Up

little green leaf-eating worms

Posted by stones_throw (My Page) on
Mon, May 14, 07 at 20:29


My friend's fruit trees (2 apples and 2 pears) have been getting munched by tiny green worms. They are chewing holes through the leaves.

Is BT what you'd use to kill these cute little buggers off? Does anyone know what these worms are, exactly? Is this a problem that's to be expected and controlled each year?

Zone 6a, full sun, good well-drained soil. Trees purchased and planted in April of this year, 7 gallon pots.

Thanks in advance for any help.

Follow-Up Postings:

RE: little green leaf-eating worms

stones throw:

Perhaps the reason your little green worm infestation has not generated much comment is that the answer seems so obvious: Spray them with something. It does not help that no one knows whether you are in Alaska or Arizona; there are lots of places in zone 6a. Few of us here are entomologists and qualified to identify little worms on the basis of their color, but if they are eating holes in leaves, you want to be rid of them whatever they are. Whether they will need to be controlled each year may depend in part on whether you control them now. Allowing them to have their way is practically guaranteed to increase their numbers.

Whether you decide to use a common insecticide or a biological control is up to you. There are several insecticides that would be effective and easy to apply to small trees with a 1-quart trigger sprayer, and they are readily available in the nursery sections of bigbox stores, and most specialized nurseries. Ask the staff what they recommend. Bt is itself a living organism, which takes longer than chemicals to have an effect on caterpillar type creatures, but can also be effective if it is important to you to avoid chemicals of any kind. But Bt has a short shelf life, so make sure the stuff you buy is fresh. Bt cannot be stored and used from year-to-year as its potency quickly degrades. Bt is also most effective when used early in the outbreak of caterpillar infestations.

I don't suppose it makes much difference, but it isn't clear from your message whether the trees in question were purchased in 7-gallon pots then planted in the ground, or planted in 7-gallon pots after purchase. If you purchased potted trees from a local nursery, that same nursery ought to be able to advise you on controlling pests of fruit trees.

Don Yellman, Great Falls, VA

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Fruit & Orchards Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here