Oxalis - Ask Extension
How to remove large areas of oxalis (yellow flower) in lawn before resodding or reseeding
Knowledgebase
Oxalis #833454
Asked June 02, 2023, 7:58 PM EDT
How to remove large areas of oxalis (yellow flower) in lawn before resodding or reseeding
Ramsey County Minnesota
Expert Response
Hand pulling or a weed killer for broadleaf weeds that is safe for lawns will remove oxalis.
After using Roundup on large oxalis area what should our reseeding strategy be. It has been one week. Assume after a few more days we should rake dead debris (and how do we dispose of it?) do we need to rototill? And give the drought would it be possible to cover dead area and wait for more favorable weather pattern?
The dead grass and weeds can go in yard waste. Roundup has a short half life and does not persist. It isn’t necessary to rototil but good soil to seed content is necessary so raking well with a garden rake exposes soil well. Grass will grow when it is hot but you may have to water two or even three to keep the soil moist until the seed germinates and gets about an inch tall. Labor Day is a much better time. Just leaving the dead grass and roots would be fine until you are ready to seed. Expect to see some weeds because of seeds in the ground.
https://extension.umn.edu/lawn-care/renovating-lawn-quality-and-sustainability
https://extension.umn.edu/lawn-care/renovating-lawn-quality-and-sustainability
