I've had it for three years. Planted in a lot of dappled shade and extremely damp, poorly draining soil. It is lush and beautiful in the spring, but by the middle of summer it's miserable and looks miserable for the rest of the year. This spring it isn't even putting on its usual spring show - I think it knows summer is coming and decided not to bother with more than a few leaves.

I've tried it three times, and it has never looked good or lasted more than a year. I admit defeat with this one.

Liking chartreuse, I tried LM a couple of times but the plants melted. The reason may be..........
"Susceptibility to pests and diseases: Lady's mantle has no serious insect or disease problems, but in climates with hot nights, water collected in leaf depression may promote growth of fungus."

Thanks for the responses. I figured that was why it's never available at local nurseries. :-(