Here, I'll share some common lavender pruning mistakes to avoid, ensuring your plants stay in top shape.
Quick Answer
To keep lavender healthy, prune in late summer after flowering, avoid cutting into old wood, and maintain a neat shape. Mistakes include pruning too early or late, cutting too deep, and neglecting regular maintenance.
When to Prune Lavender
Timing is crucial when it comes to pruning lavender. The best time to prune is in late summer, just after the flowering season. In the UK, this generally means late August to early September. Pruning too early or too late can stress the plant and affect next year's flowering.
Common Mistakes to Avoid
Pruning Too Early or Late
Pruning lavender too early in the spring or too late in the autumn can hinder its ability to recover and flower the following year. Aim to prune just after the blooms start to fade.
Cutting into Old Wood
Lavender plants don't regenerate well from old wood. Avoid cutting into the woody stems as this can lead to bare patches and reduce the plant's vigour.
Ignoring the Shape
It's important to maintain a neat, rounded shape when pruning. This encourages even growth and prevents the plant from becoming leggy. Always follow the natural shape of the plant.
- Prune in late summer for best results
- Avoid cutting into old wood
- Maintain a neat, rounded shape
Pruning Techniques
Use sharp, clean secateurs to avoid damaging the plant. Start by removing spent flower stalks, then trim back about one-third of the green growth. Be gentle and precise to maintain the plant's health.
Pruning Guide by Month
| Month | Action | Notes |
|---|---|---|
| June - July | Deadhead | Remove spent blooms to encourage more flowers |
| August - September | Prune | Trim back after flowering finishes |
| October - November | Light Tidy | Remove any dead or diseased wood |
Frequently Asked Questions
Can I prune lavender in spring?
It's best to avoid heavy pruning in spring as it can stress the plant. Light tidying is fine, but major cuts should be done in late summer.
What if I've pruned into old wood?
If you've accidentally cut into old wood, there's not much you can do to reverse it. Try to focus on maintaining the health of the remaining green growth.
How often should I prune lavender?
Prune your lavender annually in late summer to keep it healthy and encourage new growth. Regular maintenance will also help prevent the plant from becoming woody and sparse.