Cumbria,
United Kingdom 
do i put begonia tubers in a cold frame
2 Apr, 2010
Previous question
Cumbria,
United Kingdom
do i put begonia tubers in a cold frame
2 Apr, 2010
Previous question
No - start them off in the house if you don't have a heated greenhouse, on a sunny windowsill. Move outside when all risk of frost is past - though you could risk putting them in a coldframe by end of April if warm enough, once they're growing plants.
2 Apr, 2010