Hyssopus officinalis 'Tricolour Mixed' - Kew Pollination Seed CollectionHyssop

Sow hyssop seeds indoors or under glass from April to May. Sow seed in pots or trays on the surface of barely moist seed compost. Do not cover the seed or exclude light as this will aid germination. Place the seed tray in a propagator at a temperature of 15-20C (59-68F) or seal inside a clear polythene bag until germination which takes 14 - 21 days.

When seedlings are large enough to handle, transplant into 7.5cm (3") pots and grow on in cooler conditions. When all risk of frost has passed, gradually acclimatise Hyssop plants to outdoor conditions over 7 - 10 days before planting outdoors. Plant Hyssop at a distance of 60cm (24") apart on any well drained or chalky soil in full sun. Hyssop thrives in drier soils.

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.