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 77 products.
 

Dianthus barbatus 'Kaleidoscope Mixed'

Sweet William

  • RHS Perfect for Pollinators
A cottage garden favourite with an unusual colour twist! This beautiful Sweet William produces large heads of pretty pink flowers that gradually mature to white, creating a delightful bicolour effect. Sweet William 'Kaleidoscope' is highly scented with multi branching stems that make it superb for cutting. Often grown as a biennial, this short lived perennial is ideal for borders, beds and containers, and will even flower in the same year if sown early. Height: 60cm (24”). Spread: 30cm (12”).

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

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    • 1 packet (40 seeds)

    • Despatch: Within 3 days
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    • £1.99

Dianthus plumarius 'Sonata'

Pink

Flowering all summer with very double, fragrant classic cottage garden pinks. Flowers 16-18 weeks from sowing.

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

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    • 1 packet (30 seeds)

    • Despatch: Within 3 days
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    • £1.49

Hollyhock 'Nigra'

Alcea rosea, Althaea rosea

 Customer Rating
Tall strong stems bearing chocolate maroon flowers, becoming almost 'black' towards the centre. This is a unique variety creating an impressive impact against most backgrounds. Flowers mid to late summer. Height 5ft.

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

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    • 1 packet (50 seeds)

    • Despatch: Within 3 days
    •  
    • £0.99

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.

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    • 1 packet (80 seeds)

    • Despatch: Within 3 days
    •  
    • £2.99

Pansy 'Singing the Blues'

Viola x wittrockiana

This mixture of four enchanting colours, in shades and contrasts of blue, are not just pretty but the most sensational breakthrough in Violas for a decade. They were specifically bred for containers, baskets and ground cover, possessing a unique trailing habit. Above all they are wonderfully fragrant with a gorgeous, pervading sweet scent. Flowers appear in abundance and because they are tolerant to cold and heat, they can be grown all year round. Height: 2-3in Flowers spring/summer.


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

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    • 1 packet (25 seeds)

    • Despatch: Within 3 days
    •  
    • £0.69

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

Pansy 'Chalon Supreme Wildberry Mixed'

Viola x wittrockiana

A stunning mixture of large ruffled flowered pansies in a dazzling wild berry blend of purple picotees and rose shades. Bushy compact plants flower over a long period brightening autumn, spring or summer containers. Spring sowings will give flowers during early summer, whilst summer and autumn sowings will bloom the following winter or spring.


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

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    • 1 packet (20 seeds)

    • Despatch: Within 3 days
    •  
    • £2.69

Hollyhock 'Fiesta Time'

Alcea rosea, Althaea rosea

A beautiful, cottage garden favourite which will flower quickly from seed in its first year. Robust, dwarf plants produce stout stems which carry wonderful, double, cerise-pink, fringed blooms from mid to late summer. Very impressive when planted together in small groups in borders or try planting in large containers for a gorgeous patio display of hollyhocks!

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

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    • 1 packet (35 seeds)

    • Despatch: Within 3 days
    •  
    • £2.99

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.

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    • 1 packet (50 seeds)

    • Despatch: Within 3 days
    •  
    • £2.69

Pansy 'Padparadja' F2 Hybrid

Viola x wittrockiana

So intense is the effect of its solid orange blooms, it is unlikely there is anything to match it.

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
    •  
    • £0.99

Agastache hybrida 'Astello Indigo'

  • Fleuroselect Gold Medal
Indulge your senses with the fabulous mint-scented flower-spikes of Agastache hybrid 'Astello Indigo'. The long-lasting, deep blue flower spikes are irresistible to bees and butterflies and make a fabulous addition to borders and containers. This attractive half-hardy perennial is ideal for gravel gardens and wildlife borders, although it is generally grown as an annual in colder areas. Height: 60cm (24"). Spread: 30cm (12").

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

More info
    • 1 packet (15 seeds)

    • Despatch: Within 3 days
    •  
    • £2.99

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
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    • £3.39