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ShrubsConservatory Greenhouse

Lavandula dentata var. dentata 'Royal Crown'

French lavender 'Royal Crown'

A compact, rather tender evergreen shrub to 60cm in height, with narrow, dark green leaves with finely toothed margins, and long-stalked spikes of small purple flowers topped by pale purple bracts

Synonyms

Lavandula dentata 'Royal Crown'

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.5–1 metres

Chalk

Clay

Loam

Sand

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing

Exposure

Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Lamiaceae
Native to GB / Ireland: No
Foliage: Evergreen
Habit: Bushy
Genus: Lavandula are small aromatic evergreen shrubs with usually narrow, simple, entire, toothed or lobed leaves and small tubular flowers in dense spikes in summer
Name status: Accepted

How to grow

Cultivation

Thrives in well-drained, ideally slightly alkaline soil; will not tolerate waterlogging. In warmer regions, may be planted out in a sunny, sheltered position with winter protection. In areas prone to frost, grow in containers and overwinter in a greenhouse or conservatory. See lavender cultivation for more advice

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

Coastal
Cottage and informal garden
Patio and container plants
City and courtyard gardens
Wildlife gardens
Mediterranean climate plants
Conservatory and greenhouse

Pruning

Pruning group 10

Pests

May be susceptible to rosemary beetle and cuckoo spit (froghoppers)

Diseases

May be susceptible to grey moulds (Botrytis) and honey fungus (rarely)

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