In the Forestry 4.2 (1.7.10) I can customize the types of flowers through a configuration file.
apiculture.cfg
flowers {
I can customize plantable flowers and accepted flowers.
I can plant a variety of flowers vie dy of other modifications that can not be duplicated by other methods.
In the versions Forestry for 1.10 and 1.11, this option was removed.

My wishes:

1. Please, inform the developer of the mod Forestry about the return of this option.
2. Add in this configuration file sections for bees from the Binnei mod.

Forestry has own issue tracker. Please create issue with link there.