- 1). Remove the violas by hand and discard them away from the garden. Check your garden daily for viola seedlings and uproot them as soon as they appear. Seeds from last year's violas typically germinate and grow as soon as the soil is disturbed in the spring.
- 2). Mulch to prevent new plants from growing. Laying landscape fabric or a 2- to 3-inch layer of bark or stone around the base of your plants prevents stray seeds from taking root. Eliminating open surfaces reduces the chances of violas spreading in your garden.
- 3). Deadhead violas as soon as blooms fade if you prefer to control violas and restrict them to one area of your garden. This prevents the plants from going to seed. Once seed pods form, they mature quickly and burst to scatter seeds into new areas.
- 4). Apply herbicide following the recommendations on the package to totally eradicate violas. Use caution to prevent accidentally contaminating the soil or damaging other vegetation in the area.