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Columbine plants are cherished for their delicate, colorful flowers and their ability to thrive in a variety of garden settings. However, like many perennials, they can become crowded and less vigorous over time. Dividing and rejuvenating aging columbine plants can help restore their health and enhance their flowering performance.
When to Divide Columbine Plants
The best time to divide columbine is in early spring or immediately after the plant has finished flowering in late spring or early summer. Dividing during these periods allows the plant to recover quickly and establish new growth before the growing season ends.
Tools and Materials Needed
- Garden spade or fork
- Sharp knife or pruning shears
- Gloves
- Compost or organic matter
- Water for soaking
Step-by-Step Guide to Dividing Columbine
Follow these steps to successfully divide and rejuvenate your columbine plants:
1. Prepare the Plant
Water the plant thoroughly a day before dividing. This ensures the soil is moist, making it easier to dig up and reducing stress on the plant.
2. Dig Around the Plant
Use a garden fork or spade to carefully loosen the soil around the base of the plant. Gently lift the entire clump out of the ground, taking care not to damage the roots.
3. Divide the Root Clump
Use a sharp knife or pruning shears to divide the root clump into smaller sections. Each section should have several healthy roots and at least one crown with shoots. Be gentle to avoid damaging the roots.
4. Prepare the New Planting Sites
Choose a sunny or partly shaded location with well-draining soil. Mix compost or organic matter into the soil to improve fertility and drainage.
5. Replant the Divided Sections
Plant each division at the same depth it was growing before. Water thoroughly after planting to settle the soil and eliminate air pockets.
Caring for Rejuvenated Columbine Plants
After dividing, provide your columbine plants with proper care to ensure successful establishment and vigorous growth:
- Water regularly, especially during dry spells.
- Apply a layer of mulch to retain moisture and suppress weeds.
- Fertilize in early spring with a balanced, slow-release fertilizer.
- Remove spent flowers to encourage new blooms.
- Divide again every 3 to 4 years to maintain plant health.
Tips for Healthy Columbine Plants
- Ensure good air circulation around the plants to prevent fungal diseases.
- Plant in well-drained soil to avoid root rot.
- Monitor for pests such as aphids and treat promptly.
- Provide some shade in hot climates to prevent leaf scorch.
By following these steps and tips, you can extend the life of your columbine plants and enjoy their beautiful blooms year after year. Regular division not only rejuvenates the plants but also keeps your garden vibrant and healthy.