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Alpine Rockery

Penstemon rupicola 'Conwy Rose'

penstemon 'Conwy Rose'

A low mound- and mat-forming, evergreen perennial to 8cm, with small, rounded, leathery, blue-green leaves. Short, upright sprays of narrowly bell-shaped, rose-pink flowers 3.5cm long are produced in late spring and early summer. Ideal for rock garden or alpine house

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Ultimate height

Up to 10cm

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Loam

Chalk

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

Exposed or 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: Plantaginaceae
Native to GB / Ireland: No
Foliage: Evergreen
Habit: Clump forming, Matforming
Genus: Penstemon may be deciduous or evergreen perennials or subshrubs, with simple, narrow leaves and racemes or panicles of bell-shaped or funnel-shaped flowers in summer and early autumn
Name status: Accepted

How to grow

Cultivation

Grow in poor to moderately fertile, very gritty, well-drained soil in full sun. In cold areas, protect plant overwinter with a dry winter mulch. See penstemon cultivation for further advice

Propagation

Propagate by softwood cuttings in early summer or semi-ripe cuttings in midsummer

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Patio and container plants
Gravel garden
Rock garden
Coastal
Wildlife gardens

Pruning

Deadhead after flowering

Pests

Generally pest-free

Diseases

Generally disease-free

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