A very ornamental plant, it is liable to die out after flowering, probably because it exhausts itself by producing so many flowers.
Erysimum cheiri syn. Cheiranthus cheiri (common name "wallflower") is a species of flowering plant, native to Europe but widespread as an introduced species elsewhere. It is also widely cultivated as a garden plant. It is known as giroflée and ravenelle in French, Goldlack in German, alhelí in Spanish and violacciocca in Italian.
This is an herbaceous perennial, often grown as a biennial, with one or more highly branching stems reaching heights of 30 cm. The leaves are generally narrow and pointed and may be up to 20 cm long. The top of the stem is occupied by a club-shaped inflorescence of strongly scented flowers. Each flower has purplish-green sepals and rounded petals which are two to three centimeters long and in shades of bright yellows to reds and purples.
This is a popular ornamental plant, widely cultivated for its abundant, fragrant flowers in spring. It associates well in bedding schemes with other spring flowers such as tulips and forget-me-nots. It is usually grown as a biennial, sown one year to flower the next, and then discarded. This is partly because of its tendency to grow spindly and leggy during its second year, but more importantly its susceptibility to infections such as clubroot.
Information source: https://en.wikipedia.org
Genus - Erysimum
Species - Cheiri
Variety - Bedder mix
Common name - Wallflower
Pre-Treatment - Not-required
Hardiness zones - 5 - 9
Height - 0,30 m
Spread - 0,25 m
Plant type - Biennial flower
Exposure - Full Sun, partial Sun
Growth rate - Medium
Soil PH - Neutral
Soil type - Ordinary garden soils, tolerating poor and limey
Water requirements - Low, average
Landscape uses - Bedding schemes with other spring flowers such as tulips and forget-me-nots. A good butterfly and moth plan. A good companion for apple trees.
Bloom season - April - June
Leaf / Flower color - Green / Bright yellow, red, purple, pink
Sow inside in pots in April - May or directly in May - June.
Seed needs light to germinate - sow it on the moist surface of the soil, compact it lightly. Keep moist. Best germination temperature - +16C.
Germination within 10-15 days.
Transplant the seedlings 20-25 cm apart after the last spring frost.
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