Thompson & Morgan

Important delivery notice
The products on this site are only delivered to UK addresses. If you require delivery to another country please visit one of our other sites below.

Refine Results

Refine by..

Email Newsletter

Sign up to our newsletter

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 20 products.
 

Echinacea 'PowWow Wild Berry'

Coneflower
With outstanding garden performance and the capacity to produce more flowers per plant than any other seed-raised Coneflower, Echinacea ‘PowWow Wild Berry’ is a striking addition to any garden. Whether grown as a first-year flowering or as a traditional over-wintered perennial, its unique and intense deep-pink flowers with their dark rose centres will invigorate borders and pots with their vivid colour. Coneflower plants are particularly useful for exposed coastal sites and wildlife gardens. Height: 60cm (24"). Spread: 45cm (18"). More info
    • 1 packet (10 seeds)

    • Despatch: Within 2 Days
    •  
    • £3.99
Erigeron Karvinskianus Profusion

Erigeron karvinskianus 'Profusion'

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

    • Despatch: Within 2 Days
    •  
    • £2.99
Echinacea Purpurea Pink Parasol

Echinacea purpurea 'Pink Parasol'

Coneflower
Pink Parasol has stunning, large, deep purplish-pink blooms, with contrasting orange cones standing proudly above strong stems. Each bloom can reach 7-10cm (3-4in) in diameter compared to other varieties only reaching a diameter of 5-7cm (2-3in). Once established, bushy plants produce clusters of stems adding height to your borders, attracting butterflies and beneficial insects to your garden, as well as making dramatic long lasting cut flowers. Height 90-120cm (3-4ft) More info
    • 1 packet (35 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49
Achillea Millefolium Cassis

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. More info
    • 1 packet (70 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.49
Achillea Millefolium Summer Berries F2 Hybrid

Achillea millefolium 'Summer Berries' F2 Hybrid

Yarrow
An easy to grow, first year flowering perennial, Achillea Summer Berries is ideal for adding a sumptuous mixture of fruity colours to borders. Achillea Summer Berries makes an excellent cut or dried flower, as well as attracting bees and butterflies to your garden. Height: 60-75cm (24-30in). More info
    • 1 packet (40 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49

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 (12”) in the first year and 80cm (32”) 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 (31”). Spread: 60cm (24”). More info
    • 1 packet (80 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.69
Achillea Filipendulina Cloth Of Gold

Achillea filipendulina 'Cloth of Gold'

Fern-leaf Yarrow
Achillea ‘Cloth of Gold’ is an indispensible border plant, with flat, plate-like, mustard yellow flower heads carried above finely-cut, ferny foliage. This free flowering perennial is undemanding and easy to grow, making a bright splash of summer colour in borders and meadows. Achillea flowers make a charming cut flower and can be dried for everlasting flowers too. Height: 1.5m (59"). Spread: 45cm (18"). More info
    • 1 packet (500 seeds)

    • Despatch: Within 2 Days
    •  
    • £0.69
Echinacea Purpurea Double Decker

Echinacea purpurea 'Double Decker'

Coneflower
A very unusual purple-red flowered variety that produces predominantly single flowers in the first growing season, followed by a high percentage of these visually stunning 'twin' flowers in the second season, with the chance that some may even be fully double. These intriguing flowers grace tall, strong stems and make superb long lasting border perennials, attracting many beneficial insects to your garden. More info
    • 1 packet (20 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.99
Kniphofia Hirsuta Traffic Lights

Red Hot Poker 'Traffic Lights'

Kniphofia hirsuta, Torch Lily
An intriguing dwarf red hot poker with unusual red, amber and green flower spikes. First year flowering, adding interest to borders and containers. Height: 30-40cm (12-16in). *Sow Sept/Oct to flower the following season. More info
    • 1 packet (20 seeds)

    • Despatch: Within 2 Days
    •  
    • £3.29
Kew : Eryngium Giganteum Miss Wilmott's Ghost

Eryngium giganteum 'Miss Willmott's Ghost' - Kew Collection Seeds

Sea Holly
A highly ornate border plant with heart-shaped basal foliage from which rise stems of many decorative steel-blue cones surrounded by a collar of prickly, scalloped leaves. During the summer the foliage transforms from mid green to silvery-grey. Wonderful for dried arrangements, especially at Christmas. Plants can be short lived but often self seed before dying. Height: 90-100cm (36-40in). More info
    • 1 packet (30 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.09
Eryngium Alpinum Blue Lace

Eryngium alpinum 'Blue Lace'

Sea Holly, Alpine Eryngo
A spectacular alpinum selection with impressive long lasting clear violet-blue terminal flower heads on stunning blue stems. Makes an eye-catching addition to any border, and an attractive cut flower. Height: 85cm (34in). More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.79
Echinacea Tennesseensis

Echinacea tennesseensis

Tennessee Coneflower

 Tall stems of small narrow foliage bear large purplish-rose flowers with unusual upward pointing petals. Plants are free-flowering, ideal for cutting and attracting birds and butterflies. Height: 70cm (28in). More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.49