I have the Filigran cultivar and it blooms off and on all during spring, summer and fall, stays upright, and gets about 2 1/2' tall. Does great. I prune it down to about 4-6" in late winter, just before things start waking up. Wouldn't trade it for anything, however, I only have a single specimen, and since it doesn't get very big I think it would make a bigger impact if I had several planted together. I have them planted near crimson pygmy barberry and they set each other off very nicely.

Thanks for the information debndal! I think I will look for a cultivar that may bloom better for me than the one I have now, which I believe is the species. Meanwhile, I will cut mine down very low to see if hard pruning will help its performance.
Molly

I have never had much luck with them. I do not know why.