Lavender, known for its captivating fragrance and silver foliage, is a beloved garden plant. However, over time, an old lavender plant can become woody, less attractive, and less prolific in blooming if not pruned properly. Here’s how to revive and maintain your lavender’s beauty and health.
When to Prune Old Lavender
The best time to prune depends on the season and the condition of the plant:
- Early Spring (March to April): Light pruning to remove any dead or winter-damaged branches.
- After Main Blooming (August to September): A more vigorous pruning can be done to shape the plant and encourage new growth for the next season.
- Avoid Pruning During Frost or Peak Growth Periods: Do not prune when the plant is actively growing or in the winter months when frost damage is possible.
Tools You’ll Need
- A clean, sharp pruning shear.
- A pair of gloves to protect your hands.
- A rake or tarp to collect the cuttings.
How to Prune Old Lavender
1. Pre-Pruning Evaluation
- Inspect the plant to identify the woody, old branches (those without leaves) and newer green shoots.
2. Remove Faded Flowers
- Cut the spent flower stems just above the leaves. This will conserve the plant’s energy and prepare it for new growth.
3. Prune Gradually
- Prune the woody branches in stages. Remove about one-third of the plant’s wood each year to prevent stressing the lavender.
- Never cut into the bare wood (branches without leaves) as lavender will not regenerate from these sections.
4. Shape the Plant
- Shape the lavender into a rounded dome to encourage even growth.
- Ensure the plant’s base receives sunlight to prevent it from becoming too leggy or dying off.
Post-Pruning Care
- Watering: Only water if the soil is very dry. Lavender does not like overly wet soil.
- Mulching: Add a layer of mulch around the base to protect the roots and retain moisture.
- Monitoring: Keep an eye on the plant for signs of stress, such as yellowing leaves or excessive leaf drop.
Additional Tips
- If your lavender is very woody and unproductive, consider replacing it with a new plant grown from cuttings.
- Perform light pruning each year to maintain the plant’s shape and prevent it from becoming overly woody.
- Choose hardy varieties like Lavandula angustifolia (true lavender) for their resilience and longevity.
With the right pruning and care, your lavender will continue to thrive, offering vibrant blooms and delightful fragrance for years to come.