Removing oxalis in raised garden bed - Ask Extension
Hello- I am attempting to get an old garden back into shape. We have a huge problem with oxalis in one of our raised beds. I do not want to use chem...
Removing oxalis in raised garden bed #851297
Asked September 26, 2023, 1:37 PM EDT
Hello- I am attempting to get an old garden back into shape. We have a huge problem with oxalis in one of our raised beds. I do not want to use chemicals to treat as this is our vegetable garden. Any suggestions as to how to get rid of this annoying weed? Thanks!
Hi Jessica, Thank you for your question about removing oxalis from your vegetable garden bed. As you have experienced, oxalis can be a very difficult plant to eliminate from the garden.
Oxalis flowers and produces seeds heavily in the spring and summer but can produce both all year long. Small plants can easily be handpicked or dug as they appear before they flower or form seeds. Removal of all vegetative portions of the plant, including roots and rhizomes, is important. Rhizomes can be easily removed when the soil is moist. Do not place the weeds with seeds in compost bins for reuse in the landscape.
A light layer of mulch in landscape beds and around flowers and shrubs will aid in preventing further germination of oxalis seeds. The seeds require light for germination, so limiting light to the seedbed with mulch will reduce the numbers of new oxalis plants. Source: Oxalis Control | Home & Garden Information Center (clemson.edu)
If you need additional information, I recommend you call the Deschutes County OSU Extension office in Redmond at<personal data hidden>. Ask to speak with Amy Jo Detweiler (oregonstate.edu), a member of the Horticulture Staff. Amy Jo welcomes your home garden questions and is a great resource.
This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.