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 57 products.
 

Centranthus 'Star Ruber Mixed'

Valerian, Red Valerian, Pretty Betsy

A beautiful border plant beloved by bees and butterflies. Mixture contains three colours: rose, white and maroon. Plants are lightly fragrant, long flowering and may also be used as a cut flower.
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    • 1 packet (100 seeds)

    • Despatch: Within 3 days
    •  
    • £0.99

Delosperma 'Hardy Mixed'

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 seeds)

    • Despatch: Within 3 days
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    • £2.69

Cyclamen 'All-the-year-round Flowering Mixed'

A balanced mixture of hardy garden varieties thriving in shade or woodland, chosen from species flowering at most periods of the year. Height: 8-15cm (3-6in). More info
    • 1 packet (16 seeds)

    • Despatch: Within 3 days
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    • £0.99

Erigeron karvinskianus 'Profusion'

Erigeron karvinskianus, Fleabane, Mexican Fleabane

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

    • Despatch: Within 3 days
    •  
    • £3.49

Achillea millefolium 'Cassis'

Yarrow

Many stems with masses of attractive, intense cherry red flowers, over a very long period. Achillea Cassis is a first year flowering perennial, making an excellent border filler and cut flower.
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    • 1 packet (70 seeds)

    • Despatch: Within 3 days
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    • £0.99

Achillea millefolium 'Summer Berries' F2 Hybrid

Yarrow

Masses of tiny flowers create flat plates of colour that balance on tall stems above the aromatic, feathery foliage. This low maintenance perennial provides an explosion of late summer colour to brighten the backs of herbaceous borders. Easy to grow, even on poor dry soils, Achillea millefolium ‘Summer Berries’ is ideal for wildlife gardens where it attracts butterflies and other insects. The vivid range of colours also makes yarrow a spectacular cut or dried flower. Height: 60cm (24"). Spread: 60cm (24").
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    • 1 packet (40 seeds)

    • Despatch: Within 3 days
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    • £2.69

Monarda didyma 'T&M Superb Mixed'

Bee Balm, Bergamot

Candelabra-like whorls of flowers in a formula mixture with mint scented foliage. Indispensable border flower for most soils, particularly damp sites. Height 90-100cm (30-40in).

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

More info
    • 1 packet (80 seeds)

    • Despatch: Within 3 days
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    • £2.99

Achillea ptarmica 'Double Diamond'

Yarrow, Sneezewort

 Customer Rating
Compact bushy plants are smothered with mainly double, dazzling white pom-pom flowers. An improved selection of this fabulous first-year-flowering hardy perennial, growing to 30cm (12Ó) in the first year and 80cm (32Ó) in the second. Achillea 'Double Diamond' is ideal for the front and middle of borders, as ground cover or as low hedging where it will attract bees and other beneficial insects. This elegant Yarrow also makes a lovely cut or dried flower. Height: 80cm (31Ó). Spread: 60cm (24Ó).
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    • 1 packet (80 seeds)

    • Despatch: Within 3 days
    •  
    • £0.99

Primula veris

Cowslip

The famous meadow and hedge row plant of simple beauty. Fragrant lemon yellow pendulous blooms. Easy to grow in sun or part shade. Flowers spring. Height 23cm (9in). Contact with the leaves may cause skin allergy to some people with sensitive skins.

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

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    • 1 packet (150 seeds)

    • Despatch: Within 3 days
    •  
    • £2.69

Primula vulgaris

Primrose, Common Primrose

Without doubt this native British plant is one of the most beautiful of the Primula family and an excellent garden plant. The flowers are of softest yellow, a colour very rare among flowers, and are deliciously scented. Happy in full sun or part shade. Flowers spring. Height 6in.

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

More info
    • 1 packet (50 seeds)

    • Despatch: Within 3 days
    •  
    • £2.69

Primula x tommasinii 'You and Me Blue'

Hose-in-Hose Primula, Polyanthus

A rarely-offered Primula with the amazing feature of producing two layers of flowers per stem. This unique flower form was first recorded in 1597 and was known as 'Hose in Hose' types after the way Elizabethan gentlemen wore their stockings! You & Me Blue is a delightful selection, which shows off this intriguing characteristic at its best, as well as displaying excellent garden performance and winter hardiness in borders or containers. Height: 15-20cm (6-8in). More info
    • 1 packet (12 seeds)

    • Despatch: Within 3 days
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    • £0.99

Monarda citriodora subsp. austromontana 'Bees' Favourite'

Bee Balm, Bergamot

 Customer Rating
Masses of flower spikes bearing tiers of soft mauve flowers are produced by this quick and easy to grow border plant. It flowers easily in its first season from an early sowing, producing a bold display of flowers over a long period. Exceptional for its unusually shaped flowers on strong square stems and the rich minty fragrance, which is freely released when the plant is brushed. Compact upright habit and makes a very neat and tidy plant which will add structure and shape to the border, particularly if planted in groups of three. Excellent for cutting and beloved by bees. Requirements: One of the easiest perennials to cultivate. Happy in sun or light shade and any ordinary garden soil, although they prefer a rich moisture retentive soil which doesn't dry out in the summer. They are very easy to grow, the mat like roots soon forming a large clump, but are not usually invasive. In dry soils they don't grow quite so tall.

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

More info
    • 1 packet (100 seeds)

    • Despatch: Within 3 days
    •  
    • £3.39