Allium Leaf Miners


Joined
May 29, 2021
Messages
70
Reaction score
35
Location
Warfordsburg, PA
Hardiness Zone
6b
Country
United States
Has anyone had experience with these critters?
Just pulled my leeks & they were significant.
Any ways to avoid?
TIA.
Mick
 
Ad

Advertisements

Joined
Feb 2, 2014
Messages
10,648
Reaction score
4,987
Location
Tarpley Tx
Hardiness Zone
8b
Country
United States
Has anyone had experience with these critters?
Just pulled my leeks & they were significant.
Any ways to avoid?
TIA.
Mick
About all you can do is ask your local experts as to when the leaf miner moths start their spring and fall flights. Then spray regularly with Neem Oil to kill the eggs or with Bt to kill the caterpillar when it chews into the plant. I have heard of using netting but I don't know how well that works.
 
Ad

Advertisements

Joined
Sep 30, 2021
Messages
19
Reaction score
12
Location
Mansfield Woodhouse UK
Country
United Kingdom
We have had Leaf Miner on my allotment site in the UK for some years now. Please appreciate that any timings I can offer regarding the life cycle are UK timings. The fly appears in March / April having overwintered in the soil. The female fly lays her eggs near the bottom of the young allium plants. She will also make puncture wounds on the plants stem and feed off the sap. The eggs hatch and the larvae begin to feed off the leaves then work their way into the stem of the leek or bulb of the onion. The flies pupate after a couple of weeks and in September/October emerge again as flies starting the whole process again. They will eventually hibernate and reappear in Spring.
In the UK there are no sprays available for domestic growers the only effective alternative is to cover the crop as soon as you have set it with in my case enviromesh supported by blue water pipe hoops. I have tried scaffold netting but it has a seam running down the middle which will let the fly in. My wife sewed this seam up which was somewhat effective but not as good as envireomesh. I have tried to upload a picture of one of my nets . I this instance its covering carrots but is the same principle.
On my site we also suffer with Downey Mildew and white rot but tha's for another day on how I combat those.
20190724_090607.jpg
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Top