WALLFLOWER

FAMILY: Brassicaceae | GENUS: ERYSIMUM

TYPE
  • Annuals
  • Biennials
  • Perennials
SUN EXPOSURE
  • Full Sun
  • Partial Shade
WATER
  • Varies by Species

Plant Details

They may be called wallflowers, but for early-season bloom, these biennials and perennials are belles of the ball. All have the clustered, four-petaled flowers typical of the plants in the brassica (mustard) family, but their habits and uses differ widely. In the South, usually grown as cool-season annuals.

english wallflower

erysimum cheiri

  • Perennial in Zones US, MS; USDA 6-7, but usually grown as a biennial or an annual.
  • From southern Europe.
  • Branching, woody-based plants to 1212 feet high, 1112 feet wide, with narrow, bright green leaves and broad clusters of showy, sweet-scented flowers in spring.
  • Blossoms are yellow, cream, orange, red, brown, or burgundy, sometimes shaded or veined with contrasting color.
  • Sow seeds in spring for bloom the following year (some strains flower the first year if seeded early); or set out plants in fall or earliest spring.
  • May self-sow.
  • Regular water.

Charity series includes dwarf plants (1214 inches

  • tall and not quite as wide) that don't need winter chill to induce flowering; set out in spring for fall bloom.
  • Selections include soft yellow 'Charity Cream', golden yellow 'Charity Yellow', and dusty rose 'Charity Rose'.

erysimum hybrids

  • Perennials.
  • Zones US, MS, LS, CS; USDA 6-9.
  • Many excellent choices available.
  • Most popular is 'Bowles Mauve', 3 feet high and 46 feet wide, with narrow gray-green leaves held on erect stems, each topped by a 112 feet-long, narrow, spikelike cluster of mauve flowers.
  • Often begins blooming in midwinter, continuing until hot weather begins in May.
  • Often short-lived.
  • Compact Bowles Mauve is about half the size.
  • Lemon Zest grows 812 inches high and wide, with pale to lemon-yellow blooms in early spring.
  • Moonlight has bright yellow owers that open from red buds.
  • Sweet Sorbet has lilac-pink flowers on a 1418 inches plant.
  • Wenlock Beauty grows 2 feet high and wide, with springtime flowers varying from buff to purple in a single spike.
  • All these hybrids take moderate water.

erysimum kotschyanum

  • Short-lived perennial in Zones US, MS, and LS, often treated as an annual; USDA 6-8.
  • Light green leaves form 6 inches mats from which rise scented, deep yellow owers on 2 inches stems in spring.
  • Moderate water.
  • Use in rock garden or with other small perennials between paving stones.
  • If plants hump up, cut out central portions, transplant them, and press original plants at again.
  • Divide clumps in fall.

variegated wallflower

erysimum linifolium 'Variegatum

  • Zones MS, LS, CS; USDA 7-9.
  • Shrubby growth to 2 feet high, 23 feet wide.
  • Prized for its narrow, 312 inches-long leaves, which are gray-green and edged in creamy white.
  • Mauve flowers about 12 inches across appear from spring to fall.
  • Moderate water.

SIBERIAN WALLFLOWER

erysimum x marshallii(Erysimum x allionii)

  • Perennial, often grown as biennial or annual.
  • Zones US, MS, LS, CS; USDA 7-9.
  • Branching plants 1112 feet high and somewhat wider are covered in spring with fragrant flowers in rich orange or yellow.
  • In mild-winter climates, sow seeds in fall; elsewhere, sow in spring for well-established plants by fall.
  • Full sun, moderate water.
  • Golden Bedder has golden yellow flowers.

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