How to Grow Wallflower Plants

How to Grow Wallflower Plants

Perennial, Cherianthus allionii

Wallflowers are easy-to-grow perennials that brighten rock gardens, banks, and walkways. They look great almost anywhere and shine in mass plantings, tolerating a little crowding.

Native to the Mediterranean, North and Central America, Europe, and Southwestern Asia. Common colors include yellow, orange, and violet; less common are pinks, blues, and crimson.

Plant Height: 4″ – 50″ depending on variety
Other Names: Blister Cress, Gillyflower
Flowers Bloom: Spring and early summer
Garden Tip: Try growing wallflowers in containers on decks or in window boxes.

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Plant Propagation

Wallflowers grow from seed. Seeds need light to germinate—loosen soil, sow on top, and water in lightly. Keep soil moist during germination.

Can also be propagated from spring cuttings.

Days to Germination: 15–30
Plants often self-seed.

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How to Grow Wallflower Plants

Wallflowers are easy to grow and maintain. They prefer full to partial sun and average to rich, well-drained soil (pH 5–8).

They don't need much fertilizer. Mix in compost at planting. Apply general-purpose fertilizer in early spring and mid-summer.

Somewhat drought-tolerant—water during dry weather. Mulch established plants to suppress weeds and retain moisture. Deadhead spent flowers for more blooms.

Plant Spacing: 12″
Flowers Bloom: Summer to early Fall

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Insects and Disease

Wallflowers are seldom bothered by insects or disease and generally don't need insecticides or fungicides. If problems arise, treat early with insecticidal soap and/or fungicide.

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