Hello, my backyard has had Lesser celandine for years. Each year the amount grows in size. Last year, at it's peak, it covered the entire backyard. I understand digging out is optimal, but I believe it is too late for this. I understand herbicides may be used before flowering (February?) I have never applied herbicides before. I saw the 4countycwma.orf website recommends "For any herbicide applications we urge you to work with a licensed herbicide applicator". Do you have recommendations on a good approach, or a recommended contractor that I might pursue? Thanks!