Creeping Charlie

(Question)

I believe I’ve read all your answers to previous questions re: Creeping Charlie in lawns.

In my case in Toronto, this weed has been creeping into one section of our lawn from neighbouring lawns on two sides and keeps spreading.   I try to make sure that not more comes in, by having a bare earth “moat” on those two sides.   However, I would like to get rid of the infested area (150 – 200 square metres).

What is the best way – not hand pulling?                                                                                                                                                                                                                      Should I cover the area with newspaper or cardboard, or cover with a tarp?
When should this start (fall, spring?)
How long should it stay on?
Afterwards, should I put new soil and grass seed or should I lay lawn sods?

Any help you can give me in this regard will be much appreciated!

(Answer)

Eradication of Creepling Charlie, Glechoma hederacea, from your lawn can be a challenge at the best of times, but it is possible to get this weed under some control.

At the moment there are no provincially approved herbicides to combat this perennial invasive weed.

However, your suggestion of solarization is an effective method of eradicating perennial invasive weeds with added benefits as well.  The links below explain the method and optimum season of use, as well as, in the cooler seasons such as our current mild December weather.

Once your treated area is free from Creeping Charlie, you may either re-seed or lay sod.

www.weekendgardener.net/organic-weed-killer/solarization-100710.htm

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74145.html