Erysimum Walberton's Fragrant Sunshine ('Walfrasun')

RHS Plant Profile

wallflower [Walberton's Fragrant Sunshine]

Synonyms

Erysimum 'Walfrasun'
Erysimum 'Fragrant Sunshine'
Erysimum 'Walberton's Fragrant'

Herbaceous Perennial

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A bushy, evergreen perennial, to 45cm tall, with narrow, dark green leaves and short, upright spikes of fragrant, bright yellow flowers opening from dark buds in late spring through to late summer

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Loam Sand

Moisture: Well–drained
pH: Alkaline or Neutral

Position

Full sun

Aspect: West–facing or South–facing or East–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): H5
Drought Resistance: Yes

Colour & Scent

Fragrance Flower

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Brassicaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy
Genus: Erysimum can be annuals, biennials or woody-based perennials with narrow leaves and dense racemes of often fragrant, 4-petalled flowers
Name Status: Trade

How to Grow

Cultivation

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

Propagation

Propagate by semi-hardwood cuttings in spring or summer

Suggested planting locations and garden types

Coastal
Cottage and informal garden
Gravel garden
Wildlife gardens
Garden edging
Flower borders and beds

Pruning

Trim lightly after flowering to prevent plants becoming leggy

Pests

May be susceptible to slugs, snails and flea beetles

Diseases

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