Last autumn (August) I bought a tree peony 'Gaugain' and this spring (February) a 'Chinese Dragon'. I planted both of them about 8cm deep (is it correct?) in containers. I think they're not grafted on herbaceous peonies.
Now both of them have flower buds. Should I dead head them? (heart ache) If I don't, is there any negative impacts? I'm worry about the 'Chinese Dragon'. I think it doesn't established yet.
Hankeat- Berlin, Zone "7a"