Dahlia Flower Watering. Most dahlia growers advise watering near the roots. Harvest the blooms in the morning when the plants are full of water to ensure the longest-lasting flowers.
If you live in an area where theres summer rainfall that usually is enough for the plant to survive. Plants from tubers never over water and do not leave stagnant water around young plants from tubers. If your watering method does include watering the foliage water.
For many this means watering dahlia plants one to three times each week.
Jun 04 2021 The main one being nitrogen. Cover the tubers with 2-3 cm of soil tamp down the soil after planting and water the plants generously. Watering varies depending on whether you are planting a dahlia plant from a tuber or from a cutting. For many this means watering dahlia plants one to three times each week.