Thompson & Morgan

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Perennial & Biennial Seeds


Biennials live for 2 years, whereas perennials live for longer. As a general rule, biennial and perennial seeds should be sown in spring, but some can be sown in autumn as well. Many varieties will self-seed after flowering, giving you even more plants!



We have found 132 products.
 

Sunflower x laetiflorus

Helianthus x laetiflorus, Perennial Sunflower, Showy Sunflower

 Customer Rating

A true perennial Sunflower adding height and colour to perennial borders, flowering in their first year. Stunning bright yellow 10-12cm (4-5in) diameter blooms with deep yellow centres, will brighten your garden over a long period attracting birds and butterflies. Height: 150-180cm (5-6ft).


Companion planting: Try growing sunflowers with chives to deter aphids.


Useful links:

Companion Planting

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Culinary note: Some parts of these flowers are edible. Try toasting the seed kernels for a healthy snack. For more details about edible flowers click here.

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    • 1 packet (25 sunflower seeds)

    • Despatch: Within 1 days
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    • £2.49

Agastache foeniculum 'Golden Jubilee'

Anise Hyssop, Agastache rugosa, Agastache anisata, Agastache anethiodora

Attractive, golden-green foliage with a distinct aniseed fragrance, making a vibrant contrast to the compact lavender-blue flower spikes. Adds interest to borders and containers, as well as attracts wildlife to your garden. Fragrant and excellent in borders or containers.

Culinary note: Add both flowers and leaves to cakes or whipping cream for a hint of anise flavour. For more details about edible flowers click here.

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    • 1 packet (20 agastache seeds)

    • Despatch: Within 1 days
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    • £0.99

Penstemon barbatus 'Iron Maiden'

Beardlip Penstemon, Chelone barbata

 Customer Rating
A glorious and choice border plant which will grace the garden with its bright scarlet, tubular-like flowers. Pendulous, rich blooms borne on tall, slender spikes of green and red, with sword shaped blue-green leaves. Particularly valuable as it starts flowering in August and looks wonderfully fresh and bright when all around is starting to fade. Makes a stunning cut flower. Flowers late summer. Height 90-120 cm (3-4ft.).
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    • 1 packet (35 penstemon seeds)

    • Despatch: Within 1 days
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    • £0.99

Cynara cardunculus

Cardoon

 Customer Rating
The ripening seed heads of Cynara cardunculus are a fantastic combination of bronzes and golds. The stems are thick and sturdy, the foliage is large, serrated and silver and in its own right presents an imposing border plant for most of the year.
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    • 1 packet (18 cynara seeds)

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    • £0.99
    • Out of stock

Snail Vine

Vigna caracalla, Phaseolus caracalla, Snail Flower, Snail Bean, Corkscrew Flower

 Customer Rating
This quick growing, evergreen twining climber is a close relative to the runner bean, grown for its pendants of twisted flowers, like coiled snail shells, up to 5cm (2") across. The fascinating summer flowers are followed by cylindrical green fruits in late autumn. Requiring a minimum temperature of 15°C (59°F), Vigna caracalla is best grown in patio containers that can be moved indoors to a heated greenhouse or conservatory for the winter. Alternatively, grow snail vines outdoors as an annual. Height: 6m (20'). Spread: 2m (6').
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    • 1 packet (4 snail vine seeds)

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    • £0.99
    • Out of stock

Dianthus amurensis 'Siberian Blues'

Carnation, Pink

This charming hardy perennial forms neat mounds of blue-grey evergreen foliage that contrast beautifully with the lavender blue flowers. Dianthus amurensis 'Siberian Blue' blooms over a long period throughout summer on resilient, dense plants with a vigorous habit. Perfect for planting in rockeries, alpine troughs and at the front of borders where it will form useful low maintenance ground cover. Height: 38cm (15"). Spread: 30cm (12").

Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

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    • 1 packet (100 dianthus seeds)

    • Despatch: Within 1 days
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    • £1.99

Delosperma floribunda 'Stardust'

Ice Plant

 Customer Rating
The perfect plant for that hot, dry spot in your borders or rockeries. Dwarf, shiny, deep green, almost metallic-looking succulent foliage bursts into bloom from mid May. Plants are covered with spectacular lilac-purple flowers flowers with large white centres, flowering until the first frost. Loved by butterflies. Height: 10-15cm (4-6in)
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    • 1 packet (200 delosperma seeds)

    • Despatch: Within 1 days
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    • £2.69

Verbena bonariensis

Glandularia, Verbena patagonica

Tall heads of bright, eye-catching rosy lavender, adding a tranquil tropical feel to borders. Height: 120-150cm (4-5ft).
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    • 1 packet (200 seeds)

    • Despatch: Within 1 days
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    • £2.99

Pansy 'Water Colours Mixed' F1 Hybrid

Viola x wittrockiana

Create a masterpiece with this fine mixture of the most delicate shades which has been an unqualified success wherever T&M have shown it. The colours work together in a way that brings raptuous comments wherever it is seen and it has performed well under adverse weather conditions both for colour, winter/ spring and summer flowering, for colour harmony and usefulness whether in containers, hanging baskets or bedding. Height: 15-20cm (6-8in).

Culinary note: Some parts of these flowers are edible. The crystallised petals are great decorations for cakes and cookies, or they can be added straight to green salads for an injection of colour. For more details about edible flowers click here.

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    • 1 packet (30 pansy seeds)

    • Despatch: Within 1 days
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    • £1.99

Dianthus deltoides 'Micro Chips'

Carnation, Maiden Pink

A true first year flowering perennial Dianthus that is very quick to bloom. Dwarf deep green foliage, soon becomes smothered in a spectacular mixture of dainty serrated edged flowers. Stunning in containers, used as ground cover at the front of borders or added to rockeries. Height: 15-20cm.

Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

More info
    • 1 packet (80 dianthus seeds)

    • Despatch: Within 1 days
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    • £0.99

Pansy 'Can-Can Mixed' F1 Hybrid

Viola x wittrockiana

A choreographed medley of dazzling frilly blooms. Layers of ruffled and wavy petals add a new dimension to the ever popular pansy. A fun and frivolous variety that merits centre stage in your garden. Radiant in borders, containers and flower pouches. Height: 15-23cm (6-9in).

Culinary note: Some parts of these flowers are edible. The crystallised petals are great decorations for cakes and cookies, or they can be added straight to green salads for an injection of colour. For more details about edible flowers click here.

More info
    • 1 packet (20 pansy seeds)

    • Despatch: Within 1 days
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    • £2.99

Penstemon digitalis 'Husker Red'

Beard Tongue

A plant collector's item for decades. Husker Red is an unusual Penstemon offering maroon-red , occasionally bronze-green foliage when grown from seed. This is coupled with contrasting spikes of blushed pink flowers making useful late summer colour for borders. Height: 50-75cm (20-30in).
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    • 1 packet (40 penstemon seeds)

    • Despatch: Within 1 days
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    • £0.99