Posted: 08/06/2014 at 09:01
Getting to enjoy dahlias again now. Always considered them a little "blowsy", shapeless and clumsy. Now I grow prob 30 dahlias.....in the garden (overwinter outside) and in pots. More than half are purple foliage vsrieties.
Twynings After Eight is the darkest of all foliage varieties, I think, with white flowers and Yellow Honka is delightful as is Claire de Lune......
I never overpot.....small tubers in small pots....as they grow I repot. Then they grow fast. Currently all potted dahlias are in 3 to 5 litre pots and large plants. A couple are in large containers and stand about 3' and getting bigger daily. these will be staked. They have copper tape around the pots but the bigger the container the more likely slugs, etc. will get into the compost. I use 3 or 4 pellets per large pot but also pick off any at night time
Any dahlia taller,than 4' needs staking and I use simple cane and string. Then I always tie a stem to outside of cane so cane is hidden and no support structure is seen.