How to dig and divide dahlia tubers

Here’s a step-by-step guide for digging and dividing dahlia tubers:

1. Wait for the First Frost

  • Wait until after the first frost has blackened the dahlia foliage, signaling that it’s time to dig up the tubers.

2. Cut Back the Plant

  • Use garden shears to cut the foliage down to about 4-6 inches above the ground. This makes digging easier and helps prevent damage to the tubers.

3. Loosen the Soil Around the Plant

  • Use a garden fork or shovel to loosen the soil around the plant, starting about 12 inches from the base. Work your way around the tuber clump to gently lift it out.

4. Lift the Clump Carefully

  • Carefully lift the clump from the ground, trying not to break any tubers. Shake off excess soil, or gently rinse with water to get a clear view of the tubers.

5. Identify the Eyes

  • The “eyes” (growth points) are small buds that will sprout next season. Look for these on the tuber necks near the stem; they’re essential for successful division.

6. Divide the Tubers

  • Use a sharp, clean knife to cut tubers away from the main stem. Each division should have an eye to ensure it will grow. Discard any damaged or rotten tubers.

7. Let Tubers Dry

  • Lay tubers out in a cool, dry place for a few hours to let the cuts heal. This helps prevent rot during storage.

8. Store Properly

  • Place the tubers in a container filled with slightly damp peat moss, vermiculite, or sawdust. Store in a cool, dark place (around 40-50°F) for the winter. Check them occasionally for rot or shriveling.

By following these steps, you’ll be ready for healthy, productive dahlias next growing season!

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