What I've done, if they aren't too bad along, is simply dig them up and plant them back in the ground again to the crown. My Amethyst Myst did this and I ended up dividing it into three plants while I was at it. I know heucheras are bad for this, and I'm guessing, but not positive, that the tiarellas and the huecherellas do not. If they are really bad, try breaking off a piece with a bit of stem left below the crowns and stick them in a pot to see if it'll root. Some critter last spring broke off the top of my Cherry Cola and so I thought, what the hey, and pushed it into the ground near the original plant. Lo and behold, it rooted, but it helped that the soil stay evenly moist the whole time it rooted. Momma recovered nicely, and baby was doing well last I knew. I haven't been in Ohio since February to see how my plants are doing. Hopefully the stupid squirrels haven't destroyed anything. I'll be so glad to not have to deal with them anymore.
Karen
