Sunstrong Orange Wallflower
Erysimum linifolium ‘Sunstrong Orange’Sunstrong™ Orange Wallflower is a compact, upright perennial selected from Erysimum linifolium, a wallflower native to the rocky slopes of Spain and Portugal. Bred by Danziger in Israel, where trial plants had to keep growing through long, hot summers, it forms a bushy, well-branched clump of narrow green leaves. Plants grow quickly, reaching about 18–20 inches tall and 16–18 inches wide in their first season.
Rounded clusters of fragrant, tangerine orange flowers, each with four broad petals, open at the tips of the stems in spring and keep coming through summer and into fall until frost. Unlike older wallflowers that bloom only in spring, it flowers in its first year without needing a winter chill. Butterflies and bees visit the blooms. It suits the front of sunny borders, mass plantings, rock gardens and large containers, and short stems can be cut for small bouquets.
Sunstrong Orange Wallflower grows best in full sun and also accepts partial sun; where summers run hot, some afternoon shade helps. It prefers poor to moderately fertile soil with good drainage, and once established it tolerates drought and dry, rocky ground. Zone 6 is the cold edge of its range, and the grower advises protection from harsh winter conditions, so plants may come back for one to a few seasons. Deer and rabbits seldom browse it. A few simple steps keep it blooming.
Care Instructions:
Planting: Plant in spring after the last hard frost in a sunny, well-drained spot, setting the crown at the same depth it grew in the pot and avoiding low areas where water collects.
Soil: Grows in poor to moderately fertile loam or sandy soil from slightly acid to alkaline; heavy soil that stays wet shortens its life.
Watering: Water deeply and regularly through the first season, letting the soil dry slightly between waterings; established plants tolerate drought but flower more reliably with water during long dry spells.
Fertilizing: Apply a light, balanced fertilizer in spring; rich soil and heavy feeding produce soft, leggy stems.
Pruning: Trim plants lightly in midsummer to encourage a fresh flush of flowers, then cut them back by about half in fall after blooming ends.
Spacing: Space plants approximately 12–18 inches apart; at the closer spacing the clumps will meet and form a continuous band of orange.
Maintenance: Spread a light layer of mulch around the base after the first hard frost, keeping it off the crown, and replace plants that fail to return or turn leggy after a few years.
Gardeners choose Sunstrong Orange Wallflower for months of warm orange color from a plant that keeps flowering long after spring wallflowers have finished. Its compact size and upright form fit small beds, cottage gardens and patio pots, while its tolerance of heat and dry soil makes it practical for hot, sunny sites. It performs best in full sun and lean, fast-draining soil, where its fragrant flowers draw butterflies all season.
Landscape Solutions:
- Its long bloom season carries orange color from spring into fall in sunny borders where many perennials flower for only a few weeks.
- Drought tolerance once established makes it useful in hot, dry beds, rock gardens and other spots that are hard to water.
- Deer and rabbits seldom browse it, so it keeps flowering in gardens where animals damage other plants.
- Its upright, compact form gives height to mixed containers and small gardens without crowding neighboring plants.
- Fragrant flowers that bloom all season provide a steady nectar source for butterflies and bees in pollinator plantings.
