Remove spent flowers to encourage further blooms during summer and autum
Taller varieties of Dahlias will require staking to maintain healthy growth and lovely blooms. For these varieties it is best to stake the plants upon planting the tubers to avoid any root disturbances later on.
To encourage bigger blooms, leave two or three flower buds on the plant, disbud any additional or smaller buds that may form.
When picking flowers for indoor decoration, this is best done in the cool or the evening.