Dahlia Flower Root System. Dahlias are an outstanding plant with beautiful flowers. For dahlias with a growth height of over 50 cm put a support rod in the ground.
Tomato cages can also be a simple approach to staking. They perform best when provided with adequate sunlight. Mulching around the base of the plants will help reduce moisture loss and keep the roots cooler.
Composted Cow and Sheep manure is ideal.
Finally before storing tubers or corms a spray or dip with a broad spectrum contact fungicide eg. Dahlias have tubers to support sprouting and the very first stages of growth. Woman with a flower. If you are hand-watering its best to water deeply once or twice per week.