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. For direct sowing take a look at our stunning range of hardy annual seeds.



We have found 31 products.
 

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 morning glory seeds)

    • Despatch: Within 1 days
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    • £0.99

Lobelia erinus 'Blue Wings'

On T&M's trials we believe we have found the largest flowered bedding lobelia available. Exceptionally abundant cobalt blue flowers cover compact mounds of foliage. With superb weather resistance Lobelia 'Blue Wings' makes a sparkling addition to beds, containers, flower Pouches® and window-boxes. An easy to grow annual that is deservedly popular for its versatility and long flowering period. Height: 15cm (6"'). Spread: 20cm (8"'). More info
    • 1 packet (1000 lobelia seeds)

    • Despatch: Within 1 days
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    • £0.99

Salvia farinacea 'Fairy Queen'

Mealy Sage, Mealycup Sage

Unique breeding has brought us this very visually appealing Salvia. Bushy, compact plants bear multiple spikes of attractive blue and white bicoloured flowers on distinctive dark stems. Flowers all summer and continues through to October in borders or containers. Height: 35-45cm (14-18in).
More info
    • 1 packet (40 salvia seeds)

    • Despatch: Within 1 days
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    • £0.99

Morning Glory 'Heavenly Blue'

Ipomoea tricolor, Ipomoea rubrocaerulea

 Customer Rating
Gorgeous sky blue flowers, up to 6cm (2½in) across that open in the morning, appear throughout summer on this free-flowering, elegant climber. Also suitable for greenhouse or conservatory growing. Prefers a sunny, sheltered, warm site; Beautiful climber ideal for warm site trellis, fences, poles, etc.
More info
    • 1 packet (50 morning glory seeds)

    • Despatch: Within 1 days
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    • £2.49

Salpiglossis sinuata 'Kew Blue'

Painted Tongue

 Customer Rating
Kew Blue adds height and a touch of class to your summer displays. Slender stems bear clusters of velvet-like flowers in an exquisite shade of deepest purple-blue each complemented by a central dark blotch. Sure to attract admiring glances when used in borders or as a cut flower.
More info
    • 1 packet (30 salpiglossis seeds)

    • Despatch: Within 1 days
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    • £0.99

Lobelia erinus 'Cambridge Blue'

A compact variety renowned for its excellent garden performance. Clear sky-blue lobelia flowers are set above narrow, airy foliage on compact plants. Lobelia 'Cambridge Blue' makes a sparkling addition to beds, containers, flower Pouches® and window-boxes, and even looks well placed in the rockery. An easy to grow annual that is deservedly popular for its versatility and long flowering period. Height: 10cm (4"). Spread: 15cm (6"). More info
    • 1 packet (2500 lobelia seeds)

    • Despatch: Within 1 days
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    • £2.19

Laurentia 'Avant-Garde Blue' F1 Hybrid

Isotoma, Solenopsis axillaris

T&M's flower breeders have struck gold with the first ever F1 Hybrid Laurentia to be entered into the Fleuroselect trials. Both 'Avant-Garde Blue' and 'Pink' have the same uniform, vigorous plant habit and have earlier scented, star shaped blooms which are produced in abundance over a long flowering season. Your garden will be filled with colour all summer. Height: 25-30cm (10-12in).
More info
    • 1 packet (50 laurentia seeds)

    • Despatch: Within 1 days
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    • £2.49

Butterfly Pea

Clitoria ternatea, Blue Pea

A fast-growing tropical climber producing a wonderful display of 5cm (2in) blue flowers from mid to late summer. Ideal for covering trellis in a sheltered part of the garden where it will attract bees and butterflies, or as a perennial grown in a conservatory. Climbs 1.8m-2.4m (6-8 feet). More info
    • 1 packet (20 seeds)

    • Despatch: Within 1 days
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    • £2.99

Lobelia erinus 'Blue Splash'

Masses of white flowers splashed with marine blue to give an intriguing and unusual effect. Flowering up to 4 weeks earlier than many trailing lobelia varieties, 'Blue Splash' makes a sparkling addition to beds, containers, flower Pouches® and window-boxes. An easy to grow annual that is deservedly popular for its versatility and long flowering period. Height: 15cm (6"). Spread: 25cm (10"). More info
    • 1 packet (1000 lobelia seeds)

    • Despatch: Within 1 days
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    • £1.49

Lobelia erinus 'Blue Cascade'

 Customer Rating
Freely branching plants are covered in myriads of bloom to create clouds of true blue lobelia flowers with a small white eye. Unsurpassable among trailing lobelias, 'Blue Cascade' makes a sparkling addition to containers, flower Pouches® and window-boxes. An easy to grow annual that is deservedly popular for its versatility and long flowering period. Height: 15cm (6"). Spread: 25cm (10").
More info
    • 1 packet (1500 lobelia seeds)

    • Despatch: Within 1 days
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    • £2.19

Nolana paradoxa 'Sun Belle Mixed'

Succulent trailing foliage becomes a mass of blue, purple and white bells, each with an accentuated yellow and white throat. Plants show great drought resistance and will look stunning all summer grown in baskets, containers or as a ground cover plant in hot sunny borders. More info
    • 1 packet (100 nolana seeds)

    • Despatch: Within 1 days
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    • £0.99

Nemesia strumosa 'KLM'

Cape Jewels

The top petals are rich blue in clear contrast to the lower petals' creamy whiteness. Lots of flowers, smaller than the large flowered strains, even in height 25cm (10in) and with universal appeal. Named after the Dutch airway KLM whose company colours are blue and white. An excellent companion to our red and white Nemesia Mello. Use it in beds, borders etc, to brighten up the garden or in tubs, planters, on the patio or even as a windowsill pot plant. Flowers summer. Height 25cm (10in.)

More info
    • 1 packet (400 nemesia seeds)

    • Despatch: Within 1 days
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    • £0.99