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5 petunia plants only £2.99 with every order

Snips only £1.99 with every order

5 fuchsia plants only £3.99 with orders over £25

Iris (Wild) - Exotic Seed CollectionDietes grandiflora

Just £3.99

Half-Hardy Rhizome
What is Half-Hardy Rhizome?

We are really sorry, but this product is no longer available.

Description Sowing More Info Delivery

Very gracious, unusual tropical iris like blooms, pure white with a bronzey-yellow throat flanked by three mauve veined petals.

Useful Links:
How to sow flower seeds
Reasons to buy your seeds from Thompson & Morgan

Greenhouse, Conservatory


Sun or semi shade

Up to 120cm (47.2in)

Up to 30cm (11.8in)

A little experience

Greenfingered gardeners

Sowing Months Flowering Months

Protect plants with a layer of bracken over the winter months.

Germinate on the surface of good free draining, soil-based compost. Cover with a very fine sprinkling of compost or vermiculite. Keep in a cool position at a temperature of between 15-20C (59-68F). Germination can take 1-3 months.

Transplant when large enough to handle into 7.5cm (3in) pots, and grow on overwinter in a cool, well-lit position such as a coldframe.

Plant out the following spring, 90cm (3ft) apart in moist, but well drained soil in full sun.


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 £1.95.

Orders which include any other products will incur a delivery charge of £4.95.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.90 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 details of any surcharges that may apply to certain destinations.

Satisfaction Guaranteed

For your complete peace of mind, our Home and Garden products may be returned to us within 30 days of purchase for a refund of the purchase price. Items must be returned unused, at your cost and in mint condition. All items carry a manufacturer's 12 month defects warranty.