How to grow wallflowers

How to grow wallflowers

Find out all you need to know about growing wallflowers, in this detailed Grow Guide.

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sow
Sow

Do not Sow in January

Do Sow in February

Do Sow in March

Do not Sow in April

Do not Sow in May

Do not Sow in June

Do not Sow in July

Do not Sow in August

Do not Sow in September

Do not Sow in October

Do not Sow in November

Do not Sow in December

Plant
Plant

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do not Plant in April

Do not Plant in May

Do not Plant in June

Do not Plant in July

Do not Plant in August

Do Plant in September

Do Plant in October

Do not Plant in November

Do not Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does flower in March

Plant does flower in April

Plant does flower in May

Plant does flower in June

Plant does flower in July

Plant does flower in August

Plant does flower in September

Plant does flower in October

Plant does flower in November

Plant does not flower in December

Take cuttings
Take cuttings

Do not Take cuttings in January

Do not Take cuttings in February

Do not Take cuttings in March

Do Take cuttings in April

Do Take cuttings in May

Do not Take cuttings in June

Do not Take cuttings in July

Do not Take cuttings in August

Do Take cuttings in September

Do Take cuttings in October

Do not Take cuttings in November

Do not Take cuttings in December

Wallflowers (Erysimum), are commonly grown as a spring bedding plant. Most wallflowers are biennial, and are grown from seed in late spring and then planted out in autumn (you can buy bare-root wallflower plants for autumn planting). They flower the following March, offering a splash of colour when there’s little else in bloom.

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Perennial wallflowers are also available, and have become increasingly popular in recent years. Varieties such as ‘Bowles’s Mauve’ and ‘Winter Orchid’ flower almost continually throughout the year, making them great value in small gardens. Perennial wallflowers are a great source of nectar, so can provide a reliable source of food for pollinators over a long season.

How to grow wallflowers

Grow wallflowers in moist but well-drained soil in full sun to partial shade. Sow biennal wallflowers annually in late spring and plant them out in autumn. Dig them up and compost them after flowering.

Plant perennial wallflowers between May and September. Cut back periodically to maintain a good shape and promote flowering. Take cuttings regularly to ward against losses.

More on growing wallflowers:

Find out more about growing wallflowers in our detailed Grow Guide, below.


Where to grow wallflowers

How to grow wallflowers - tulips growing with wallflowers
How to grow wallflowers – tulips growing with wallflowers

Wallflowers do best in moist but well-drained soils, in a sunny location. They’ll tolerate partial shade.

Bedding (biennial) wallflowers work well when planted with spring bulbs such as tulips and daffodils, and can also be grown in pots. Perennial wallflowers are best planted towards the front of a mixed ornamental border.

Wallflowers woth well with a number of other spring-flowering plants, including daffodils. Here, Monty Don plants wallflowers and daffodil bulbs along the edge of a path, for a gorgeous spring display:


How to plant wallflowers

How to grow wallflowers - planting out bedding wallflower plants
How to grow wallflowers – planting out bedding wallflower plants

Bedding wallflowers are usually grown from seed. Sow seed in late spring and grow on to plant out in autumn or the following spring.

Here, Monty demonstrates how to sow wallflower seed:

Perennial varieties are best grown from young plants. It’s a good idea to add a handful of grit to the planting hole to aid drainage.

Find out how to plant bedding wallflowers in autumn, in this Gardeners’ World clip with Monty Don:


How to propagate wallflowers

How to grow wallflowers - sowing bedding wallflowers
How to grow wallflowers – sowing bedding wallflowers

Wallflowers are easy to propagate. In the right conditions, biennial varieties will self-seed. Some mat-forming alpine wallflowers can be propagated by division. Perennial wallflowers are sterile and therefore won’t set seed but they’re very easy to propagate from cuttings.

Find out how to grow wallflowers from seed, in this Gardeners’ World clip with Monty Don:


How to care for wallflowers

How to grow wallflowers - caring for wallflowers
How to grow wallflowers – caring for wallflowers

Trim flower stalks as they fade. Perennial wallflowers cope well with cold weather and short bouts of frost. However they don’t cope well with wet and windy winters, so make sure the soil is well drained and protect from wind.


Growing wallflowers: problem solving

Wallflowers are part of the brassica family and therefore can be prone to club root and other diseases that affect this family of plants. Downy mildew, leaf blight and flea beetles can cause problems; and beware slug and snail damage to young plants.

Perennial wallflowers are quite short-lived and can become woody, so it’s a good idea to take cuttings annually to insure against losses.


Wallflowers to grow

Erysimum 'Apricot Twist'
Erysimum ‘Apricot Twist’
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  • ‘Bedding Mixed’ – fragrant, rich blooms in a range of colours including red and yellow appear from spring onwards. For best results sow in May in a nursery bed and plant out in autumn for flowering the following spring
  • ‘Apricot Delight’ – a perennial wallflower, this is a beautiful and floriferous, woody-stemmed small evergreen shrub. The apricot-orange flowers on tall spires, appear for months on end and is a magnet for bees and butterflies
  • ‘Sunset Purple’ – produces fragrant, rich purple blooms in spring, and often, a second flush in late summer. For best results sow in May in a nursery bed and plant out in autumn to flower the following spring
  • ‘Bowles’s Mauve’ – a beautiful, floriferous, woody-stemmed perennial wallflower. It produces masses of pretty mauve flowers on tall spires, for months on end, and in warm, sheltered gardens will flower all year round
  • ‘Winter Orchid’ – a perennial variety that flowers prolifically all year round, and is also sweetly scented. Flowers are a mix of orange and purple, so they really brighten up the winter months with their cheery blooms