I purchased these bulbs from Costco in the early spring, started them in the house, then later planted them in pots outside. They are Picotee Pink and White and the Roseform Pink. The bag they came in shows lovely pictures of the expected blossoms which are double blossoms. It states on the bag "double begonia". Is there something I should be doing.
They are blossoming but the blooms are singles! Any suggestions?