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 14 products.
 

Erigeron karvinskianus 'Profusion'

Erigeron karvinskianus, Fleabane, Mexican Fleabane

Lovely subject for hanging baskets, window boxes, patio tubs. Flowers within 3 months.
More info
    • 1 packet (200 erigeron seeds)

    • Despatch: Within 1 days
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    • £3.49

Heteropappus meyendorfii 'Blue Knoll'

Seed of this amazing new garden plant can be sown early in the year* and by the same autumn will be completely smothered in hundreds and thousands of shiny, light reflecting flowers, forming perfect mounds (or knolls) 30cm (12in) high and 45cm (18in) across. During a season when little else is in flower, they are a perfect fit for a change in containers or will brighten up the border, looking like blue charm chrysanthemums. No matter what the weather conditions - torrential rain, snow or frost they continue to look far and away the best, brightest plant in the garden, even right through November. *Sow during January/February to flower in October/November. Sow September/October to flower following September/October. More info
    • 1 packet (50 heteropappus seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Penstemon barbatus 'Cambridge Mixture'

Beardlip Penstemon, Chelone barbata

A high quality mixture in shades of rose, pink, blue and purple, with grey-green foliage. Superb for containers and bedding with compact, neat habit and flowering only 16-20 weeks after sowing. Flowers summer. Height 30cm (12in).

More info
    • 1 packet (120 penstemon seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Geranium 'Summer Showers Burgundy'

Pelargonium peltatum, Ivy-leaved Geranium, Ivy-leaved Pelargonium

Presenting the first burgundy flowered ivy geranium, true from seed! Grown in containers, baskets or bedding even in hot weather - the strong, well branched, non interlocking plants hold six to eight large florets.
Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.
More info
    • 1 packet (6 geranium seeds)

    • Despatch: Within 1 days
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    • £0.99

Lavender 'Mini Blue'

Lavandula angustifolia, English Lavender

A delightful dwarf lavender flowering in its first year from an early sowing! Compact, rounded plants quickly become smothered with masses of highly fragrant, deep purple lavender flowers from mid-summer onwards, which are highly attractive to bees. With impressive garden performance, Lavender 'Mini Blue' is ideal for growing in containers or used as a neat evergreen edging to beds and borders. Height: 30cm (12"). Spread: 35cm (14").


Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.


Useful links:

Gardening news: Top 10 evergreen shrubs

More info
    • 1 packet (20 lavender seeds)

    • Despatch: Within 1 days
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    • £2.99

Gaillardia aristata 'Arizona Sun'

Blanket Flower

Extremely dwarf, compact mound-forming plants become a mass of radiant red and gold large, daisy-like flowers throughout the summer. Flowers very quickly from seed, so makes a useful addition to perennial borders, or will add interest to bedding displays and containers.
More info
    • 1 packet (20 gaillardia seeds)

    • Despatch: Within 1 days
    •  
    • £2.99

Viola 'Allspice Mixed'

Viola x wittrockiana, Pansy

A spectacular trailing viola offering a breath-taking variety of flower colour and form with a wonderful range of fragrances too! You'll have fun picking out the individual scents as each flower colour has its own distinctive perfume. Plant up Viola 'Allspice Mixed' in hanging baskets, window boxes and flower Pouches® and position them by a front door or kitchen window for an explosion of colour and fragrance throughout spring. Trails to: 30cm (12").

Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

More info
    • 1 packet (30 Viola seeds)

    • Despatch: Within 1 days
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    • £3.99

Lewisia cotyledon 'Galaxy Mixed'

Attractive, showy plants ideal for growing in rockeries or containers. Dense rosettes of foliage will produce flamboyant flowers in shades of rose-red, pink, salmon and orange. Protect plants from winter wet. Height: 15-30cm (6-12in)
More info
    • 1 packet (25 lewisia seeds)

    • Despatch: Within 1 days
    •  
    • £3.99

Gaillardia x grandiflora 'Arizona Red Shades'

Blanket Flower

 Customer Rating
  • First red gaillardia from seed
A spectacular new dwarf Blanket Flower with a long-flowering period and superb garden performance. Flowering in their first year, the fiery red blooms sit neatly above uniform, well-branched plants throughout summer and well into autumn. Gaillardia x grandiflora 'Arizona Red Shades' is undemanding, providing fabulous colour whatever the weather. Perfect for containers or filling gaps in the front of borders. Height: 30cm (12"). Spread: 45cm (18").
More info
    • 1 packet (20 gaillardia seeds)

    • Despatch: Within 1 days
    •  
    • £2.99

Gaillardia x grandiflora 'Arizona Collection'

Blanket Flower

Two spectacular dwarf Blanket Flowers with long-flowering periods and superb garden performance. Flowering in their first year, Gaillardia are undemanding, providing fabulous colour whatever the weather. Perfect for containers or filling gaps in the front of borders. Height: 30cm (12"). Spread: 45cm (18").


    • Collection comprises:
    • Gaillardia x grandiflora 'Arizona Red Shades' - Fiery red blooms sit neatly above uniform, well-branched plants.
    • Gaillardia x grandiflora 'Arizona Apricot' - Produces golden blooms blushed with apricot throughout summer and autumn.
    More info
      • 2 packets - 1 of each variety (40 gaillardia seeds in total)

      • Despatch: Within 1 days
      • SAVE £1.49  
      • £5.98 £4.49

Penstemon barbatus 'Navigator'

Beardlip Penstemon, Chelone barbata

Very dwarf, compact, base branching plants produce many short spikes, packed with flowers in a wide range of clear colours including pink, rose, blue and violet-mauve. Ideal for windy, exposed situations in bedding and containers. Height: 25-30cm (10-12in).
More info
    • 1 packet (45 penstemon seeds)

    • Despatch: Within 1 days
    •  
    • £1.49

Primula capitata 'Noverna Deep Blue'

Asiatic Primrose

First year flowering. Attractive deep blue flower heads, held aloft by intriguing powdery white stems, above contrasting grey-green foliage. Adds an eye-catching display to borders and containers from summer into autumn. Height: 25-30cm (10-12in).
More info
    • 1 packet (25 primula seeds)

    • Despatch: Within 1 days
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    • £3.19