Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Green | |||
---|---|---|---|---|
Summer | Red White | Green | ||
Autumn | Red White | Green | ||
Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered Hardiness
H4Botanical details
- Family
- Plantaginaceae
- Native to the UK
- No
- Foliage
- Semi evergreen
- Habit
- Clump forming
- 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 fertile, moist but well-drained soil in full sun or partial shade. 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-hardwood cuttings in mid summer
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Patio and container plants
- Wildlife gardens
- Flower borders and beds
Pruning
Dead-head after flowering to maintain vigour. Prune to new shoots lower down in the spring
Pests
Maybe susceptible to slugs and snails and chrysanthemum eelworm
Diseases
Maybe susceptible to powdery mildew
Get involved
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