How To Take Care Of A Dahlia Flower. Dahlias like a rich well-draining soil with plenty of organic matter and a fairly neutral soil pH of around 65. Mar 29 2021 If you plan to use your dahlias for seeds let them fully mature when fall arrives.
Pots require more regular watering. Dig about a foot away all around the plant. In fact excessive water can lead to rotting of the plant.
In order to flower well dahlias need full sun preferably at least six to eight hours a day.
Put the vase in a cool spot and check the water daily. Mar 12 2021 Dahlia Care Light. Start by filling the pot with well-draining garden soil that is moist but not wet. Cut off the dead flowers seed pods and let them dry for about 4 to 6 weeks indoors.