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Herbaceous PerennialBedding

Nierembergia scoparia 'Mont Blanc'

tall cup flower 'Mont Blanc'

'Mont Blanc' is a compact perennial to 20cm, commonly grown as an annual, with small leaves and cup-shaped pure white flowers 2cm across in summer

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Ultimate height

0.1–0.5 metres

Time to ultimate height

1–2 years

Ultimate spread

0.1–0.5 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

West–facing or South–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: Solanaceae
Native to the UK: No
Foliage: Deciduous
Habit: Bushy
Genus: Nierembergia can be annuals, perennials or shrubs, with simple, alternate leaves and cup-shaped or tubular flowers in summer
Name status: Accepted

How to grow

Cultivation

Best grown in a sunny, sheltered site in a moist but well-drained soil or grow in a container outside or under glass

Propagation

Propagate by seed or stem tip cuttings

Suggested planting locations and garden types

City and courtyard gardens
Patio and container plants
Cottage and informal garden
Flower borders and beds
Garden edging

Pruning

No pruning required

Pests

May be susceptible to aphids and glasshouse whitefly

Diseases

May be subject to a virus

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