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Special Offers

5 petunia plants only £2.99 with every order

Snips only £1.99 with every order

36 antirrhinum plants only £3.99 with orders over £25

Delphinium 'New Zealand Hybrids'

Just £1.99

Hardy Perennial
What is Hardy Perennial?
A plant that lives for more than two years.
Capable of withstanding outdoor winter temperatures down to -15C.

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

Description Sowing More Info Delivery Video
T&M are privileged to offer the results of a rigorous and exciting 11 year breeding programme by a world specialist. The 'New Zealand Hybrids' are a great improvement on the now discontinued Nobleman series. They have been specifically bred for exceptional perennial performance, and are outstanding in borders. The strong flower spikes with maximum, evenly spaced florets make them a great cut flower. Disease resistance is also advanced, offering protection against both powdery mildew and black spot. Add to this the impressive flower form and colour and you have the highest quality Delphiniums ever to be available from seed. T&M's exclusive mixture, known as 'New Zealand F1 Hybrids' offers a sumptuous range of bright blues, soft pinks and the purest whites. Beauty has never before been so freely available from seed .

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

Cottage Gardens, Cut Flower Garden


Full sun

Up to 150cm (59.1in)

Up to 75cm (29.5in)

A little experience

Easy for all

Sowing Months Flowering Months

Place in a cool position to overwinter before planting out the following spring. Provide a rich, well-drained soil in full sun with protection from wind, spacing plants by 60cm (2ft).

Caution: Irritant to skin and eyes. Harmful if eaten.
Sow in pots or trays of moist seed compost. Seed will require a period of pre-chilling to aid germination. Cover with a fine sprinkling of vermiculite. Sow September to April. After sowing, seal the container in a polythene bag and place on the bottom shelf of a fridge for 3 weeks. Check regularly to monitor germination. Then, move to an optimum temperature of about 15C (59F), keeping the surface of the compost moist but not waterlogged.

When large enough to handle, transplant seedlings into 7.5cm (3in) pots or trays.


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.