I saw some "roseform" begonias at the Jackson & Perkins web site. They were beautiful! Since I am a rose lover, I really liked these begonias. I ordered the 6 varities grouping. I believe they are tuberous begonias. I have a fairly shady spot in a circular garden under a tree where I think they would do great. It sounds like when I plant them I need to amend the soils with a good potting mix and a fair amount of sand for good drainage. Please share with me your tips or tricks for making these beauties grow to perfection. I will need to dig them out for the winter here in Colorado and need some information on doing that as well. Thanks for your help! :o)
I can't grow tuberous begonias here, but I think you've got the general idea just fine. I would mulch them well too. In the fall when the weather starts getting cooler they will probably signal you that they're about to go dormant, or if you're in danger of frost even before they slow down, dig them, shake off the loose soil, I'd lay them out on newspapers somewhere cool and shady and let them absorb the strength in the plant before cutting them off especially if you have to dig them before they start going dormant on their own. There are a number of methods for storing them then--in peat moss, perlite, shredded newspaper, hung up in onion bags or old panty hose--ventilation and not totally dry, and above freezing.
