The Importance of Storing Dahlia Bulbs over Winter
Tender bulbs are a great way to keep your garden blooming well past spring. Many of these bulbs do not start blooming until late spring or early summer which means beautiful blooms even after your tulips and daffodils have faded. Tender bulbs however can’t handle cold winter temperatures or freezing ground. So, if you grow tender bulbs like begonia, freesia or dahlia, you will have to store them away for winter. Here is a guide to help you store your dahlia bulbs this fall.
How to Store Dahlia Bulbs
- Wait until after the first frost to cut back your dahlia. They can handle a little bit of cold weather. Once the first frost hits, the majority of the leaves and greenery will die off.
- Trim them back to about 3 or 4 inches above the ground. Then wait at least a week. By waiting a week you give the dahlia eyes a chance to set. This is very important: always wait one week after cutting the stem back before digging up your plant. If it hasn’t frozen by November, don’t keep waiting; simply follow the steps and prepare your dahlia for winter.
- After waiting a week, carefully dig your plant from the ground. Dahlia roots are considered tubers and can be very delicate, so be careful as you remove them from the ground. Remove excess dirt and rinse with clean water.
- The tubers should remain moist throughout the winter, so place them in an open container packed in peat moss. Check on them periodically throughout the winter and moisten them if needed. A light misting from a squirt bottle usually does the trick.
- Store the tubers somewhere where they won’t freeze or be too warm. A garage or garden shed should work well.
Once spring has arrived, you can remove your dahlia tubers and immediately replant. By taking the time to winter them away from freezing temperatures, you can ensure beautiful blooms and a healthy plant.