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Annual BiennialBedding

Nemesia caerulea

dark sky-blue nemesia

A tender, compact, mat-forming perennial, often grown as an annual, that reaches a height of around 50cm. The erect to spreading stems bear lance-shaped leaves, up to 3.5cm long, and two-lipped, tubular flowers in shades of blue, pink and white, with yellow throats, from spring into autumn

Synonyms
Diascia × _Linaria_
Nemesia fruticans misapplied
see moreNemesia foetens

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue Pink White Green
Summer Blue Pink White Green
Autumn Blue Pink White Green
Winter
Position
  • Full sun
Aspect

West–facing or South–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Scrophulariaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Matforming
Genus

Nemesia can be annuals, perennials or sub-shrubs of bushy habit, with simple, opposite leaves and 2-lipped flowers in short racemes or solitary in the leaf axils

Name status

Correct

Plant range
S Africa Lesotho

How to grow

Cultivation

Grow in a fertile, well-drained soil in full sun. Flowering stops in dry weather unless watered freely

Propagation

Propagate by seed or by softwood cuttings

Suggested planting locations and garden types
  • Patio and container plants
  • City and courtyard gardens
  • Cottage and informal garden
  • Low Maintenance
  • Flower borders and beds
  • Garden edging
Pruning

Cut back stems after flowering

Pests

May be troubled by aphids

Diseases

May suffer from foot and root rots in wet soils

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