Starry clusters of elegant pale blue flowers
Rarely seen perennial
Long flowering period
Reliable performance year after year
Fulfilled and sold by Thompson & Morgan
Out of Stock
Height Up to 90cm (35.4in)
Spread Up to 45cm (17.7in)
cottage gardenslow maintenance garden
Sun or semi shadeDappled shade
3 Options From£6.99
2 Options From£9.99
2 Options From£1.50
3 Options From£8.99
2 Options From£13.99
1 packet (30 amsonia seeds) (26216)
Sow Amsonia seeds from February to July on the surface of a peat/sand mix seed compost and gently firm down. Keep the soil damp but not wet and do not exclude light. Place in a propagator or seal the seed tray inside a polythene bag at a temperature of at 13-15C (55-60F) for 2-3 weeks. Move to a refrigerator (not freezer) for 3-6 weeks, after which return the tray to the recommended germination temperature. Keep the compost moist at all times. Germination can be very slow taking from 30-365 days.
When seedlings are large enough to handle, transplant them into 7cm (3") pots and grow them on in cooler conditions until large enough to move outdoors. Plant Amsonia at a distance of 30cm (12") apart, in any well drained soil in sun or dappled shade.
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 £4.99.
Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.99 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.
For the chance to be featured, share your plant pictures with us
on Instagram by using the hashtag #YourTMGarden