Cross-pollination necessary for Serviceberry
Is it absolutely necessary to plant two or more Serviceberry shrubs to ensure cross-pollination (for flowering and fruiting)?
I seem to keep getting different answers from different nurseries: Sheridan nurseries insist that I should plant two of them to ensure cross pollination while Humber Nursery says that it is absolutely not required! Who do I believe??!!
I don't have space to plant two Serviceberries, just one.
I'd appreciate some advice from fellow Canucks (or fellow Torontonians!).