Lavender is one of the most reliable plants for sandy and coastal gardens in the UK. It prefers free-draining soil, full sun and low fertility, making it particularly well suited to areas such as Formby and other coastal parts of the North West.
This page focuses on selecting and maintaining lavender in sandy soil rather than general gardening advice.
Plant Profile
Botanical name: Lavandula
Plant type: Evergreen sub-shrub
Height: 30–80cm (varies by cultivar)
Spread: 30–60cm
Hardiness: Most commonly sold types are fully hardy in the UK
Aspect: Full sun
Soil: Free-draining, low fertility preferred
Numerous cultivars are available from UK nurseries, varying in height, flower colour and cold tolerance.
Suitability for Sandy Soil
Lavender performs extremely well in sandy soil because:
• Drainage is rapid
• Root rot risk is reduced
• Fertility is typically moderate to low
Improving sandy soil heavily with compost is usually unnecessary and can shorten plant lifespan.
In heavy clay, lavender often fails unless drainage is significantly improved.
Suitability for Coastal Gardens
Lavender tolerates:
• Wind exposure
• Dry conditions
• Mild salt air
In exposed coastal plots, planting in groups improves stability and visual impact. Avoid low-lying areas prone to winter waterlogging.
Choosing the Right Lavender
Most UK nurseries stock three broad types:
English lavender (Lavandula angustifolia types)
Generally the most reliable and hardy choice. Compact growth and strong fragrance.
French lavender (Lavandula stoechas types)
Distinctive flower heads. Slightly less hardy but suitable in milder coastal areas.
Hybrid lavenders
Often taller and vigorous. Suitable for informal hedging or larger spaces.
When buying online, check:
• Ultimate height
• Hardiness rating
• Whether suited to containers or borders
Planting & Establishment
Plant in spring or early autumn while soil is workable and not waterlogged.
• Position in full sun
• Avoid enriching soil excessively
• Do not overwater after establishment
Lavender prefers lean conditions.
Pruning
Light trim after flowering (July–August).
Harder prune in April once frost risk has passed.
Avoid cutting into bare woody stems without visible green growth.
Regular pruning maintains compact form and prolongs lifespan.
Common Issues
Root rot – Usually due to poor drainage.
Legginess – Caused by lack of pruning.
Short lifespan – Often due to rich soil or winter wet.
In sandy coastal gardens, lavender generally lives longer than in heavy inland soil.
Frequently Asked Questions
Does lavender grow well in sandy soil?
Yes. Sandy soil is often ideal provided it drains freely in winter.
Is lavender suitable for coastal wind?
Yes. It tolerates wind and dry conditions well.
When is the best time to plant lavender in the UK?
Spring or early autumn while soil is still warm.