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 30 products.
 

Wallflower 'Sugar Rush' F1 Hybrid

Erysimum, Cheiranthus

  • Best New Bedding Plant at the Grower of the Year Awards 2013

Winner in the ÔBest New Bedding Plant' category at the Grower of the Year Awards 2013, this is one of the most exciting wallflowers to emerge in recent years. Dense, fragrant flower spikes in shades of cream, yellow, red and purple appear not only in the spring, but throughout the autumn too, blooming just 10 weeks after sowing! With a delightful sweet fragrance and compact, multi-branching habit, Wallflower ÔSugar Rush' is perfect for beds, borders, containers and window boxes, creating a mass of colour and scent when much of the garden is dormant. Versatile and undemanding, wallflowers are tough enough to cope in even the poorest soils. Height and spread: 30cm (12").

More info
    • 1 packet (20 wallflower seeds)

    • Despatch: By end of October 2015
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    • £2.99

Wallflower 'Tom Thumb Mixed'

Erysimum cheiri, Cheiranthus

 Customer Rating
Very wide colour range, excellent in small spaces, tubs, window boxes. Slightly later flowering. Versatile and undemanding, this short lived perennial tends to be grown as a biennial, and is tough enough to cope in even the poorest of soils.
More info
    • 1 packet (200 wallflower seeds)

    • Despatch: By end of January 2016
    •  
    • £1.99

Tree Peony 'Rockii Mixed'

Paeonia

  • Rarely offered seed
A much sought-after variety. The tissue paper white blooms are splashed with deep burgundy at the base of each petal. There are few plants that can compete with the beauty of a tree peony in full bloom. A mature plant can boast in excess of a hundred exotic blooms, each measuring up to 25cm (10") or more in diameter! These exceptional shrubs are hardy and disease resistant, and will continue to bloom for a lifetime. The exotic flowers of Tree Peony ÔRockii Mixed' are simply breathtaking in borders and make exquisite cut flowers. When grown from seed, tree peonies will reward patient gardeners by blooming 5-7 years from sowing. Height and spread: 150cm (60").

Useful links:

How to plant peonies

More info
    • 1 packet (5 tree peony seeds)

    • Despatch: By end of December 2015
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    • £2.99

Wallflower 'My Fair Lady Mixed'

Erysimum cheiri, Cheiranthus

A neat, uniform free flowering strain. Soft, fragrant colours; lemon, cream, gold, apricot, purple, pink, salmon, rose and mahogany. Versatile and undemanding, this short lived perennial tends to be grown as a biennial, and is tough enough to cope in even the poorest of soils. Height: 37-45cm (15-18in). More info
    • 1 packet (400 wallflower seeds)

    • Despatch: By end of October 2015
    •  
    • £2.99

Dianthus barbatus nigrescens 'Sooty'

Sweet William

Supremely different to other Sweet Williams with 7cm (2½in) fragrant blooms of deepest maroon-chocolate on red stems and mid green foliage which matures to metallic mahogany. Stunning cut flower and border plant. Often grown as a biennial, this short lived perennial is ideal for cottage garden borders, beds and containers. Height: 30-38cm (12-15in).

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

More info
    • 1 packet (75 dianthus seeds)

    • Despatch: By end of March 2016
    •  
    • £2.69

Wallflower 'Bedding Mixed'

Erysimum, Cheiranthus

A special selection drawn from the widest colour range of the named varieties. Versatile and undemanding, this short lived perennial tends to be grown as a biennial, and is tough enough to cope in even the poorest of soils. Height: 38-45cm (15-18in) More info
    • 1 packet (400 wallflower seeds)

    • Despatch:
    •  
    • £2.59
    • Out of stock

Cyclamen persicum grandiflorum 'Scentsation Mixed'

Florist's Cyclamen, Persian Cyclamen

Lingering Freesia-like fragrance of one plant can fill a room. More info
    • 1 packet (10 cyclamen seeds)

    • Despatch: By end of March 2016
    •  
    • £0.99

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.

More info
    • 1 packet (40 dianthus seeds)

    • Despatch:
    •  
    • £1.99
    • Out of stock

Dianthus barbatus 'Indian Carpet Mixed'

Sweet William

A dwarf compact variety with a very wide colour range and excellent for bedding. It can be treated either as a biennial or as a half hardy annual to produce flowers the same season usually in around 10 weeks from sowing. Flowers early summer. Often grown as a biennial, this short lived perennial is ideal for cottage garden borders, beds and containers. Height 6in.

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

More info
    • 1 packet (400 dianthus seeds)

    • Despatch:
    •  
    • £2.29
    • Out of stock

Aquilegia 'Sweet Rainbows'

Columbine, Granny's Bonnet

A breeding breakthrough! The result of merging a full range of top quality Aquileglas, all selected for form, colour and the best fragrance. Ideal for adding sweet scentsation to any border.
More info
    • 1 packet (20 aquilegia seeds)

    • Despatch: By end of December 2015
    •  
    • £3.19

Stock 'Dwarf Mixed' (Brompton Stocks)

Matthiola incana, Gillyflower

 Customer Rating
Upright bushy, early flowering biennials producing gloriously scented flowers in a good colour range which are splendid for cutting. Flowers early summer. Height 18in.
More info
    • 1 packet (100 stock seeds)

    • Despatch:
    •  
    • £1.99
    • Out of stock

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: By end of January 2016
    •  
    • £2.99