Why lavender thrives in a drought.
Dry summers and hosepipe bans are hard on most of the garden. Lavender barely notices — it's having one of its best years.
Built for drought
Lavender evolved in Mediterranean climates, where rainfall is sparse and the soil is thin and free-draining. Its silvery leaves are built to minimise water loss, and its deep root system reaches for moisture far below the surface. In a typical damp British summer, lavender's biggest enemies are root rot and fungal disease — which makes a proper dry spell one of its better years.
How to grow lavender through a drought
-
1
Water deeply, not often
Established lavender only needs watering every two to three weeks, and only if it's showing stress signs like greying leaves. A deep soak reaches the roots properly, where daily sprinkling just evaporates before it does any good.
-
2
New plants are the exception
Recently planted lavender needs a weekly water for around the first two months while it establishes itself. After that, you can ease right off.
-
3
A hosepipe ban? No problem
Most bans still allow watering from a tap-filled can. Established plants only need a deep water every couple of weeks; new plants need two can-waters a week — both easily managed without a hosepipe.
-
4
Skip the mulch, mind the drainage
Moisture-retaining mulch sitting against the stems is a fast route to rot. A layer of grit or gravel instead improves drainage and reflects a little extra heat upward, which lavender enjoys.
-
5
Resist the urge to feed
Fertiliser encourages soft growth that then needs more water to keep up. Lavender flowers best in poor soil, so a dry summer is exactly its kind of season.
-
6
Hold off on pruning until it cools
Pruning during peak drought stresses the plant. Deadhead spent flowers if you like, but save any structural cutting back for early autumn.
The takeaway
Most of the garden needs the rain back. Lavender doesn't — while everything else is holding its breath for the next shower, it's quietly having one of its best summers in years. If this drought's proved anything, it's the value of planting something built for it in the first place.