Thank you for the information. It seems that bees love the poached egg flowers and the flowers do well in clay soil, both of which I have, so that may just do the trick.

I planted several fruit trees this past Fall and I am trying to decide on a suitable green mulch to underplant with. I have enough room to tolerate the spread of sweet woodruff, but cannot find much information on the pro's and con's of using this herb as a green mulch. Any suggestions?