HOW TO GROW WALLFLOWERS FROM SEED

Yellow blooms of Erysimum cheiri at the Botanische Tuin TU Delft, Delft, The Netherlands
How to grow wallflowers from seed



Once an extremely popular plant during the Victorian period, wallflowers have steadily fallen out of fashion over the years arguably in favour of the even more brightly coloured and mass-produced (read inexpensive) Tulip bulbs. Despite this, and maybe in part due to the ubiquitous presence of modern Tulips cultivars, wallflowers still manage to maintain a place in the garden. The reason for this is down to those gardeners who are becoming bored of seeing little else other than a sea of different sized, coloured and shaped tulips throughout the spring, wallflowers are without doubt the next in line for being the toughest and most colourful of all Spring flowering plants. In fact wallflower cultivars Erysimum cheiri 'Persian Carpet’, 'Sunset Apricot' and 'Sunset Primrose' have all received the Award of Garden Merit from the Royal Horticultural Society.

There was a time when the shops were full of bunches of bare-root wallflowers for little more than 10 plants for £1.00, but nowadays you are likely only to see pot-grown plants at a significantly more expensive price point. However this shouldn't stop you from enjoying these gorgeous flowering biennials as they are easily grown from seed.

As far as traditional bedding plants go wallflowers are amongst the hardiest, but this is understandable as the original species is a native to most of Europe. As such there is no need to propagate under protection as wallflower seeds will happily germinate outside.

Wallflower seeds should be sown during May or June in order to produce plants that can be bedded out in the autumn. Sow the seeds either individually in large modular seed trays containing a soil based seed compost ot thinly in an open, prepared seedbed of any ordinary soil. Gently water them in and they will germinate within a week or so. Generally wallflowers are extremely easy to germinate, just keep the soil or compost on the moist side bt without waterlogging the rots. When the seedlings are large enough to handle (usually around October) they can be carefully lifted, try to disturb the roots as little as possible, and bedded out in preparation for the spring. Pinch out the shoots before planting to create a compact, bushy habit. They are tolerant of most neutral or alkaline soils and will even cope well on very poor soils.

Wallflowers are usually sown one year to flower the next, and then afterwards discarded. This is for two reasonably good reasons. The first is that wallflowers have a tendency to become leggy during its second year. The second is that as time moves on wallflowers become increasingly prone to clubroot.

HOW TO GROW WALLFLOWERS FROM SEED

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