Return to the Allium Forum | Post a Follow-Up

Onion root maggots

Posted by foxglove_pa z6 PA (My Page) on
Thu, Jan 5, 06 at 8:01

Hello to the allium experts from a novice. I planted leeks in my garden plot at a communty garden last year and although they grew very well, most were infested with what I found out to be onion root maggots. I planted garlic this fall, (in a separate raised bed) and I'm concerned about the garlic getting infested. Anyone have any good non-chemical ways to deal with this pest? I've cleaned out the beds and left no infested leeks. However, since this is a community garden plot there are many beds around that I'm sure have not been cleaned and may contain onions (both wild and cultivated) that probably contain this pest. Since it's a fly as an adult it can travel a fair distance to infect new crops. Any help would be appreciated, as I'm planning to also grow leeks again this spring and would prefer them to be maggot-free!

Follow-Up Postings:

RE: Onion root maggots

Root maggots of both alliums & brassicas are well controlled w/ beneficial nematodes. Application is usually when the soil hits 50F+ . I have found a 90%+ success rate and an application usually lasts 2 years.
Floating row covers are often recommended, but except for short term crops like radish or turnips I have not done well w/ them.

RE: Onion root maggots

Thanks for the advice--I'll order some nematodes in my January seed order. I saw some in the catalog. Not sure if the row covers will be a practical solution for me--I'll see how the nematodes work out first I think.

 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 Allium 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