Plant Data Sheet
Species (common name, Latin name)
Coastal wallflower, Erysimum capitatum
N. America -
in many habitats from southern
Local occurrence (where, how common)
Olympic peninsula and
Cultivated Beds, Walls
Plant strategy type/successional stage (stress-tolerator, competitor, weedy/colonizer, seral, late successional)
Cheiranthus angustatus, Cheiranthus asper Cheirinia aspera, E. amoenum, E. angustatum, E. arkansanum, E. asperum var. amoenum, E. asperum var. angustatum, E. asperum var. arkansanum, E. asperum var. capitatum, E. capitatum ssp. Angustatum, E. capitatum var. amoenum, E. capitatum var. angustatum, E. capitatum var. capitatum, E. capitatum var. stellatum, E. capitatum var. washoense, E. elatum, E. moniliforme, E. nivale, E. wheeleri.
May be collected as: (seed, layered, divisions, etc.)
Propagated by seeds and cuttings.
Collection restrictions or guidelines
Grow seeds outdoor or take cuttings in midspring.
Seed germination (needs dormancy breaking?)
Germination usually takes place within 3 weeks.
Seed life (can be stored, short shelf-life, long shelf-life)
Poor germination after one year of storage. Short shelf life.
Recommended seed storage conditions
Plant within the first year
Propagation recommendations (plant seeds, vegetative parts, cuttings, etc.)
sow spring in an outdoor seedbed. Plant the seedlings into their permanent
positions when they are large enough to handle.
If seed is in short supply, it can be sown in spring in pots in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in early summer.
Soil or medium requirements (inoculum necessary?)
The plant prefers light (sandy), medium (loamy) and heavy (clay) soils, requires well-drained soil and can grow in nutritionally poor soil. The plant prefers neutral and basic (alkaline) soils. It cannot grow in the shade. It requires dry or moist soil.
Installation form (form, potential for successful outcomes, cost)
Container plants grown from seed or cutting in midspring.
Recommended planting density
Spacing 4”-10” apart.
Care requirements after installed (water weekly, water once etc.)
Requires a well-drained soil and a sunny position. Deadhead regularly and mulch in autumn.
Normal rate of growth or spread; lifespan
Grows to 1 foot a year and then dies back until next year.
Powell E. 1994. From Seed to
Bloom. Erysimum capitatum.
Data compiled by Steven Campbell 5-08-06