The sex of inkberry hollies (Ilex glabra)
Hello--I'm trying to purchase a male and a female inkberry holly (Ilex glabra) so that the female will produce berries for the birds, and I understand that most (all?) of the named cultivars are either male or female...but I'm finding it very hard to get reliable info, or any information at all, about which cultivars are which sex. Does anyone there know if Gem Box, Shamrock, Compacta, Densa, Nordic/Chamzin, and Nigra are male or female? Thanks in advance for any help you can offer!
New York County New York trees and shrubs