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Dividing established columbine (Aquilegia) plants is an effective way to promote healthy growth and increase your garden’s floral display. Proper division helps rejuvenate older plants and ensures new, vigorous growth. This guide provides step-by-step techniques for successfully dividing columbine plants.
Understanding When to Divide Columbine Plants
The best time to divide columbine is in early spring or immediately after flowering in late spring or early summer. During this period, the plant is actively growing, which helps the divided sections establish quickly. Avoid dividing during the peak of summer or winter dormancy to reduce stress and increase success rates.
Tools and Materials Needed
- Sharp garden spade or shovel
- Garden fork
- Garden gloves
- Clean, sharp knife or pruning shears
- Watering can or hose
- Compost or organic matter (optional)
Step-by-Step Division Process
1. Prepare the Plant
Water the plant thoroughly a day before dividing to reduce stress and make the soil easier to work with. Gently loosen the soil around the base of the plant using a garden fork.
2. Dig Up the Plant
Carefully insert a spade or shovel around the plant’s perimeter, about 6-8 inches away from the crown. Lift the entire root ball out of the ground with care to avoid damaging the roots.
3. Divide the Root Ball
Place the plant on a clean surface. Using a sharp knife or pruning shears, cut the root ball into sections. Each section should have healthy roots and at least one crown with foliage. Be gentle to prevent root damage.
4. Replant the Divisions
Plant each division at the same depth as the original. Space them according to the variety’s mature size. Water thoroughly after planting to help settle the soil and eliminate air pockets.
Post-Division Care
Keep the soil consistently moist during the first few weeks. Mulch around the plants to retain moisture and suppress weeds. Avoid fertilizing immediately; wait until new growth appears to promote healthy development.
Tips for Successful Division
- Divide plants when they are healthy and actively growing.
- Use sharp tools to minimize root damage.
- Ensure each division has enough roots and foliage to establish on its own.
- Water regularly after division to reduce transplant shock.
- Label divisions if planting in different locations or for future reference.
By following these division techniques, you can maintain healthy columbine plants, encourage new growth, and enjoy more vibrant blooms in your garden year after year.