Nemesia Nesia Banana Swirl ('Banana Swirl') (Nesia Series)

RHS Plant Profile

nemesia [Nesia Banana Swirl]

RHS

Synonyms

Nemesia 'Banana Swirl'

Herbaceous Perennial Annual Biennial

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A compact and robust, bushy, half-hardy perennial. Has small lance-shaped, toothed dark green green leaves and terminal racemes of scented two-lipped tubular flowers with mauve upper petals and yellow lower petals, and a brighter yellow protuberance in the centre from late spring to early autumn.

Position

Full sun, Partial shade

Soil Types

Sand, Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 1–2 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Sand Loam

Moisture: Well–drained or Moist but well–drained
pH: Neutral or Acid

Position

Full sun Partial shade

Aspect: South–facing or West–facing or East–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): H3

Colour & Scent

Fragrance Flower

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Scrophulariaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
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: Trade

How to Grow

Cultivation

Will grow well in moist but well-drained, fertile, slightly acidic soil in full sun. Partial afternoon shade will make flowers last longer. If growing in containers add one application of slow release fertilizer to encourage steadier performance. Overwinter in a greenhouse or in a frost free environment.

Propagation

Propagate by seed and softwood cuttings in spring or late summer

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Patio and container plants
Hanging Basket
Low Maintenance
Bedding
Conservatory and greenhouse
Flower borders and beds

Pruning

Pinch out growing tips to produce a bushier plant. Cut back in summer for a second flush of flowering, alternatively trim off spent flowers to promote continuous flowering

Pests

Generally pest-free but may be susceptible to aphids

Diseases

Generally disease-free but may be susceptible to root and foot rot in very wet conditions