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Herbaceous PerennialAnnual Biennial

Erysimum × marshallii
  • RHS Plants for pollinators

Siberian wallflower

A short-lived evergreen perennial to 60cm in height, grown as a biennial for spring bedding, with coarsely toothed green leaves, and spicy-scented, vivid orange flowers in short racemes, in spring

Other common names
Jack in the pulpit
Synonyms
Cheiranthus × allionii hort.
Erysimum allionii misapplied
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Size
Ultimate height
0.5–1 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Orange Green
Summer Green
Autumn Green
Winter Green
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H5
Botanical details
Family
Brassicaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Bushy, Tufted
Genus

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

Name status

Correct

How to grow

Cultivation

Grow in poor to moderately fertile, well-drained, neutral or, ideally, alkaline soil; full sun is essential

Propagation

Propagate by seed sown from late spring to early summer

Suggested planting locations and garden types
  • Coastal
  • Cottage and informal garden
  • Patio and container plants
  • Wildlife gardens
  • Flower borders and beds
  • Bedding
Pruning

No pruning required

Pests

May be susceptible to slugs, snails and flea beetles

Diseases

May be susceptible to a downy mildew, club root and bacterial leaf blight

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