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Lupines are beautiful flowering plants that can add vibrant color to gardens and landscapes. Over time, however, lupines may become less vigorous and produce fewer flowers. Rejuvenating old lupines through division is an effective way to restore their health and encourage new growth.
When to Rejuvenate Lupines by Division
The best time to divide lupines is in early spring or immediately after they have finished blooming 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.
How to Rejuvenate Old Lupines by Division
Dividing lupines involves carefully separating the root clumps to promote healthier, more vigorous plants. Follow these steps for successful rejuvenation:
- Prepare your tools: Use a sharp spade or garden fork, and wear gloves to protect your hands.
- Water the plant: Ensure the soil is moist to make division easier and reduce stress on the plant.
- Dig around the clump: Carefully dig around the base of the lupine to loosen the root ball.
- Lift the plant: Gently lift the entire root clump from the ground.
- Divide the root clump: Using a sharp knife or spade, cut the root ball into sections. Each section should have at least one healthy shoot and a good root system.
- Inspect the divisions: Remove any damaged or diseased roots and discard weak sections.
- Replant immediately: Plant the divided sections in well-draining soil, at the same depth as before.
- Water thoroughly: After planting, water the new divisions generously to settle the soil and encourage growth.
- Mulch around the plants: Apply mulch to retain moisture and suppress weeds.
With proper timing and careful division, you can rejuvenate old lupines, encouraging them to produce lush foliage and abundant flowers for many seasons to come.