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Herbaceous Perennial

Erysimum pulchellum
  • RHS Plants for pollinators

rock wallflower

Dense, evergreen perennial about 20-30cm tall, forming a wide mat of woody stems bearing small, narrow green leaves and short stems of bright, lemon-yellow flowers, produced above the foliage, from spring to early summer

Synonyms
Erysimum rupestre

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Yellow Green
Summer Yellow Green
Autumn Green
Winter Green
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Brassicaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Spreading branched
Genus

Erysimum can be annuals, biennials or woody-based perennials with narrow leaves and dense racemes of often fragrant, 4-petalled flowers

Name status

Unresolved

How to grow

Cultivation

Grow in a sunny position in poor to moderately fertile, well-drained, neutral to alkaline soil

Propagation

Propagate by softwood cuttings in spring or summer

Suggested planting locations and garden types
  • Coastal
  • Cottage and informal garden
  • Gravel garden
  • Rock garden
  • Wildlife gardens
  • Banks and slopes
  • Flower borders and beds
  • Ground cover
Pruning

Trim after flowering to prevent plants becoming leggy

Pests

May be susceptible to slugs, snails, cabbage root fly and flea beetles

Diseases

May be susceptible to downy mildews, club root, leaf spot, root rot and virus diseases

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