Wallflower 'Persian Carpet' - Kew Collection SeedsErysimumCheiranthus

Direct sow Wallflower seeds outdoors from May to June. Choose a position in full sun on well drained soil which has been raked to a fine tilth. Sow Erysimum seeds thinly, at a depth of 1.5mm (1/16”) deep in drills set 30cm (12”) apart. After sowing, do not exclude light as this helps germination which usually takes 7 to 14 days. Water the ground regularly, especially during dry periods When large enough to handle, transplant the wallflower seedlings into their final positions at a distance of 30cm (12”) apart. Erysimum plants are tolerant of most neutral or alkaline soils and will even cope well on very poor soils.

Alternatively, sow wallflowers in pots or trays of moist seed compost and cover with a very light sprinkling of compost or vermiculite. Seal container inside a polythene bag at a temperature of 10-15C (50-59F). When seedlings are large enough to handle, transplant and grow them on in cooler conditions until large enough to plant outdoors in September or October.

When wallflower plants are 13cm (5”) tall, pinch out the growing point to make them more bushy.

Feed and water Erysimum plants until they are fully established. Trim back Wallflower in late autumn or early winter after flowering has finished, to prevent them from becoming leggy and encourage a second flush of flowers in spring.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £6.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.