Posted: 10/03/2015 at 12:59
Not Dahlias, they are best outside.0ne of ours is only single glazed so can get cold at night, I just use if for Lilly, Geraniums,fuchsias begonias etc. would like to sow something exotic for in there but I don't think any plant would like the extreme change in temp on a single glazed unit.
I may try my new Canna just up from seeds.
Edited to add a couple of pics, this does take more than a hour every single day to maintain though, so if you haven't the time, I wouldn't recommend it!