Posted: 13/04/2015 at 21:37
Growing begonia from seed is quite alot of work and it best to have a good set up with grow lights etc. I giving up after this year bothering growing from seed, I have grow them from seed before but its not worth the hassle and the expense. I started mine 1st January in a heated propagator I got them to germinate but they just have done much since still about 3mm high. I bought 1 pot from the GC for £2 which had already germinated and well on there way growing, after pricking them out I got 92 plants much better value for money, especially after buying the seeds / heating the propagator.
begonia do require constant temperatures about 24 - 27C and like it humid and lots of light to have the best results otherwise germination can be erratic / poor .
They may have dried out in the greenhouse it can get very hot even in spring sunshine, I water mine from the base in a tray waiting to see the top layer of compost damp and then remove from tray.