The RHS has started an initiative to encourage gardeners to grow trees and plants that are attractive to pollinating insects. Many of the trees we supply feature on the RHS list, and we have included "perfect for pollinators" details in our database.
The list includes many maple trees (Acer), as well as all apple trees, plum, trees and fruiting cherry trees. Many of the flowering cherries are also on the list but not all - the double-flowered forms are often inaccessible to pollinators.
List of trees which are of benefit to wildlife (including birds, animals, and insects).