Sandsock said:How quickly do feeder roots grow any ideas?
It really depends on what you are growing: old Chinese herbaceous peonies are relatively slow growers and are generally smaller than modern cultivars. I'd say the rootball of my Qi Hua Lu Shuang is about 10" wide and while I think the plant is mature now it hasn't really grown over the last couple of years, so that's probably how large it will ever get. I'd say it took 4-5 years for it to grow to full size and it didn't bloom the first year.
