Posted: 27/07/2015 at 20:15
Dahlias do need a good start.....lucky down here as they survive outdoors over winter. I pot up dahlias and keep potting on until they are large...in at least 5 litre pots to 10 litres. Developing strong plants as early as possible is the key I think. Regular feeding, pinching, staking and slug/snail pellets are important factors.
Most dahlias will be flowering now.....mine are. Bushes are from 3' to 6' tall, bushy and strong.
Dont go too mad with the feeding...it can be a negative thing. Mulching is a far better option