The dilute greenhouse fertilizer can be used to water them in. A wise gardener will check for slug damage right away. Newly planted dahlias will start growing again after a week or so. During this first week, you need to watch your plants carefully and control any damage from pests. Once the cutting is planted in the garden, it grows pretty much like a plant grown from a tuber.
Some varieties seem to grow more vigorously from cuttings.
Some plants seem to send up more stalks than those grown from tubers. We believe that plants grown from cuttings produce more flowers . This is part that we like. We can count on having enough flowers to sell by about July 15th. Customers begin knocking on our doors in June wanting bouquets.