Dahlia tubers, sensitive to freezing temperatures, require proper storage during the dormant winter months. The process involves carefully lifting the tubers from the ground after the first frost, cleaning them to remove excess soil, and storing them in a cool, dry location where temperatures remain above freezing but below 50F (10C). Proper packing materials, such as peat moss or vermiculite, help maintain appropriate moisture levels to prevent desiccation or rot.
Successful overwintering safeguards the investment in these flowering plants, allowing them to thrive again in the following growing season. Historically, effective storage techniques have been crucial for preserving desirable dahlia varieties and ensuring their continued propagation. The survival of these plants through harsh winters directly translates to vibrant and abundant blooms year after year.