Recommendations for deep shade
Under the spread of a mature oak tree. I already have Blue Angels, Elegans and a common Marginata(?), so any suggestions for greens, chartruese or others that do well and show well in fairly deep shade?
I have a City Light that's not doing well in it current spot, how would it do if I planted it under the oak's canopy (where the canopy thins out)?
This spot faces SE in zone 6.