Forget-me-nots taking over the lawn

Question

We planted a few forget me nots around the edge of the lawn last year.
Now they have spread so that around 10 square feet are just forget me nots where the lawn used to be.

How do I get rid of the unwanted flowers, presumably I will have this problem every year.

Any advice will be gratefully received.

Answer 1

There are different forget-me-nots but most are biennial if your winters drop below 0 Celsius. As long as the new ones don’t go to seed, you should be done with them in a couple of years if you are diligent. Of course, a broadleaf weed killer meant for lawns will destroy plants but not seed. Seed germinates in 1-2 weeks. To avoid herbicides, try mowing them as short as possible, then hoe the area well. Remove loosened plants and water. Expect another “crop” in 2 weeks and repeat the earlier steps.