Batten Blooms
PL. —Lavandula stoechasBotanical illustration — drop image
Lavandula stoechas

French Lavender

SpringSummerFallInvasive
7a–9bHardiness zone
Peak bloom windowZone 6b · frost-offset weeks
Winter
In bloom
Spring
Peak bloom
Summer
In bloom
Fall
Not in bloom
Peak bloom
In bloom
Background

Lavandula stoechas is a Mediterranean lavender distinguished by prominent sterile bracts at the tip of each flower head, giving a butterfly-wing silhouette unlike any other lavender species. It grows more compactly than English lavender and is better suited to warmer, drier climates where reliable drainage is easy to achieve.

Sharply drained soil and full sun are non-negotiable; standing moisture at the root zone is the primary cause of plant loss. Soil pH at or slightly above neutral suits it best. In zone 7 it may die back to the crown in hard winters but often recovers; from zone 8 upward it is typically evergreen. Shearing by one-third after each flush of growth encourages repeat performance and prevents the base from going woody too quickly.

The essential oil of L. stoechas contains camphor and fenchone at higher concentrations than L. angustifolia, distinguishing its fragrance and pharmacology. Research documents antimicrobial activity and anxiolytic effects. Traditional Mediterranean use includes topical application for insect bites, minor wounds, and skin irritation.

Growing lavender? Read the Lavender Growing Guide — which species suits your zone, drainage, pruning, and harvesting for drying, timed to your frost dates.
Good companions
English ThymeGreek OreganoRosesIrisesPeoniesSalviasNepeta
Keep apart
Spearmint
Care guide
SunFull sun
WaterLow
SoilWell-drained, sandy or gritty, neutral to alkaline
Spacing18–24 in
Height18–30 in
Zone7a – 9b
Invasive
Seasonal tasks
spring
watchCheck for lavender shab after wet spring weather: look for brown lesions girdling stems near the crown. Remove and destroy affected stems promptly.
cutShear spent stems back by one-third after the first main flush to encourage a second wave of growth later in the season.
sowSet out nursery transplants or rooted cuttings after the last frost date into a spot with excellent drainage and full sun exposure.
summer
cutTake 3–4 in softwood cuttings from non-flowering shoots and root them in gritty compost to propagate replacements or expand the planting.
watchMonitor for grey mould on stems and foliage during humid periods; improve air circulation and remove affected material immediately.
cutShear lightly after the second flush to tidy growth; stop well above the woody base to avoid cutting into old wood that will not regenerate.
fall
cutIn zones 8–9, give a final light trim to maintain compact shape. In zone 7, leave the season's growth in place to help insulate the crown through winter.
Common problems

Lavender Shab Disease

Symptoms

Shoots wilt and die back individually while the rest of the plant looks healthy. Small dark fungal bodies may appear on infected stems, and dieback spreads over the season.

Treatment

Prune out and destroy affected stems well below the wilted section, cleaning tools between cuts. Remove severely infected plants. Improve air circulation, avoid overhead watering, and plant in well-draining soil to limit spread.

Phytophthora Root Rot

Symptoms

Wilting despite moist soil, yellowing leaves, stunted growth, and dark, decayed roots and crown tissue. Vines may collapse during hot weather.

Treatment

Plant in well-draining soil and avoid waterlogging. Remove and destroy affected vines. Improve drainage with raised beds or amended soil and avoid overwatering.

Botrytis (grey mould)

Symptoms

Grey fuzzy mould on petals and stems, worst in cool wet conditions.

Treatment

Remove affected parts immediately. Improve air circulation. Avoid overhead watering. Apply copper fungicide if severe.