How Do You Plant Year-Old Dahlia Tubers?
In the 18th century, the dahlia was used as a food source; the tuber was considered a vegetable. In the early 19th century, people began to cultivate the dahlia for its blooms, which range in size from tiny to very large. Dahlias bloom from the middle of summer to the first frost. As long as your year-old dahlia tubers have been stored properly, growing them is like growing a new tuber. Choose a sunny location to plant your dahlia garden, and plan on planting when spring is underway and there is no longer a danger of frost. Prepare the planting site by digging up the soil at least 12 inches deep. Break up any large clods of dirt, and remove rocks and debris. Add a 3- to 4-inch layer of compost and the 12-12-12 granular fertilizer (follow package directions, or use a ratio of 3 pounds per 100 square feet). Mix well with your rake or shovel. Pound a stake into the ground next to where you will be planting the dahlia. This will be used to support your dahlia as it grows. Dig a 6-inch deep
