Thompson & Morgan

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Half-hardy Annual Seeds


Sow half-hardy annuals in early spring, making sure that you protect them from frost. Plant them out after all risk of frost has passed and you'll be rewarded with delightful flowers all throughout the summer. Hint: use the selections in the left menu to narrow down your search for the perfect half-hardy annual seeds for your garden.



We have found 43 products.
 

Antirrhinum nanum 'Twinny Appleblossom' F1 Hybrid

Snapdragon

You can look forward to an extra long lasting display from this fully double snapdragon, because the flowers are so tightly ruffled that insects struggle to pollinate them. This superb variety has a basal branching habit that produces compact, bushy plants. An outstanding garden performer, Antirrhinum nanum 'Twinny Appleblossom' is perfect for filling your borders, beds and containers with pretty pastel shades throughout summer. Height: 30cm (12"). Spread: 25cm (10"). More info
    • 1 packet (30 seeds)

    • Despatch: Within 3 days
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    • £3.39

Zinnia elegans 'Purple Prince'

 Customer Rating

Outstanding in Thompson & Morgan trials, these robust plants show excellent garden performance, flowering over a long period and producing an abundance of fully double, deep pink-purple, dahlia-like flowers. This is a taller-than-usual variety of zinnia which will add colour and height to border displays as well as to cut flower arrangements. Zinnia Purple Prince will flower all summer until the first frosts, attracting bees and butterflies as well as the admiration of your neighbours!

More info
    • 1 packet (100 seeds)

    • Despatch: Within 3 days
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    • £1.99

Cosmos bipinnatus 'Sweet Sixteen'

 Customer Rating

Eye-catching soft blushed pink blooms, each have distinct darker pink picotee edges and an attractive double frill in the centre of each flower. Cosmos Sweet Sixteen is ideal for adding height and interest to borders as well as making an intriguing cut flower.

More info
    • 1 packet (70 seeds)

    • Despatch: Within 3 days
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    • £2.99

Petunia hybrida 'Salmon Velvet' F1 Hybrid

The best ever trailing Petunia from seed! Following the success of our customer favourite Purple Velvet we have the next colour in the series - Salmon Velvet. These will outperform expensive cutting-raised Surfinia Petunias. Producing trailing stems up to 1m (3ft) in length, continuously smothered in blooms all summer until the first frosts. Can also be planted in borders, where it will make very effective ground cover. Growing tip: Get the best out of your petunias with our specially formulated Petunia Fertiliser - the perfect balance of nutrients to get them off to a flying start and nourish them through the summer. More info
    • 1 packet (12 seeds)

    • Despatch: Within 3 days
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    • £3.69

Cosmos bipinnatus 'Pied Piper Red'

The only separate colour available in the Sea Shells type, with fluted, shell-like petals of velvet crimson-red. The ferny foliage helps to make this a wonderful cut flower as well as a good back of border plant.
More info
    • 1 packet (100 seeds)

    • Despatch:
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    • £0.99
    • Out of stock

Morning Glory 'Carnevale di Venezia'

Ipomoea purpurea, Convolvulus purpureus, Pharbitis purpurea

A vigorous climber producing masses of spectacular, striped blue and pink blooms with intricate markings, as if painted individually. Flowers all summer, transforming your garden with all the dazzling colours of the Venice Carnival. Twining climber to 2m (6ft). More info
    • 1 packet (35 seeds)

    • Despatch: Within 3 days
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    • £0.99

Cosmos bipinnatus 'Double Click Rose Bonbon'

Following the amazing success of Double Click Mixed, this is the first straightcoloured, high-quality, fully-double Cosmos from seed to be introduced! The spectacular, rose pom-pom flowers sit proudly on top of strong stems, making Double Click Rose Bonbon a 'must' for adding height to summer borders and an imposing and rarely-seen cut flower. Height: 60-90cm (2-3 feet).
More info
    • 1 packet (40 seeds)

    • Despatch: Within 3 days
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    • £2.99

Petunia x hybrida 'Rose Vein Velvet' F1 Hybrid

 Customer Rating

The best-ever basket petunia from seed! Petunia Rose Vein Velvet is the latest colour in the velvet series and promises to be as impressive! Like the others in the series, Rose Vein Velvet will out-perform expensive cutting raised Surfinia petunias. The lovely trailing stems, up to 1m (3ft) in length, look fantastic in baskets, window boxes and other containers where they will be continuously smothered in blooms all summer long. Also makes useful and attractive ground cover.

More info
    • 1 packet (12 seeds)

    • Despatch: Within 3 days
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    • £3.99

Nicotiana mutabilis 'Marshmallow'

Tobacco Plant

 Customer Rating

Reintroduced following increasing interest by garden designers and visitors to our Open Days. Nicotiana Marshmallow is a very unusual and visually stunning variety which will add stature and fragrance to your summer borders. Above basal rossettes of large leaves, are formed masses of wiry stems are covered with a 'haze' of small blooms, each one fading through red, pink and white to give the effect of three flower colours on each plant.

More info
    • 1 packet (100 seeds)

    • Despatch: Within 3 days
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    • £1.99

Morning Glory 'Star Of Yelta'

Ipomoea purpurea, Convolvulus purpureus, Pharbitis purpurea

 Customer Rating
A stunning and very striking garden plant which can be used as a climber or ground cover subject. The large flower buds open to royal a deep purple, silk-like, 7cm (3in) bloom with rich red vein markings, forming a star from the very centre to the petal tips. You can also grow it in a container where it will cascade over the side, and if supported, will climb to form a dome. Flowers summer. Climber to approximately 180cm (6ft).
More info
    • 1 packet (25 seeds)

    • Despatch: Within 3 days
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    • £2.99

Cosmos bipinnatus 'Antiquity'

A completely unique colour in Cosmos. Flowers are rich burgundy on opening and change to an antique bronze-salmon when ageing creating an attractive, two-toned effect. Very early flowering and floriferous all summer. Excellent for borders or containers.
More info
    • 1 packet (30 seeds)

    • Despatch: Within 3 days
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    • £2.99

Cosmos bipinnatus 'Versailles Tetra'

Whether in the border, cottage garden or at the back/centre of a summer bedding display, Versailles Tetra will not disappoint you. The exquisite slate-pink, 10cm (4in) flowers have a deep red zone towards the centre with a bright yellow eye. They flower over a long period and may be used as bright, cut flowers for the house. An excellent variety. Flowers summer. Height 91cm (36in)
More info
    • 1 packet (100 seeds)

    • Despatch: Within 3 days
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    • £2.69