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 104 products.
 

Cucamelon 'Melothria'

Melothria scabra, Mexican gherkhin, Mouse Melon

  • This year's must-have, decorative, fruiting climber, ideal for planters

If you want to be on trend in the kitchen and in the garden, join top chefs and celeb gardeners by putting the unusual fruits of cucamelon on your menu this season. This easy to grow fruiting climber performs strongly on a sunny patio or border and even better in the greenhouse, producing heavy crops of mini melon fruits tasting of cucumber with a twist of lime! Eat the grape-sized fruits fresh from the vine all through summer, but do try to save some for salads, salsas and pickles!


The vigorous decorative foliage makes this lush climber truly dual purpose - grow this trendy patio fruit on an ornate obelisk and make it a talking point feature of your summer garden. For maximum fruit production, stop main stems at 2.4m (8ft) and trim back all side shoots to 45cm (18"). Height: 2.4m (8ft). Spread: 50cm (20").
More info
    • 1 packet (25 cucamelon seeds)

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

Dahlia variabilis 'Giant Hybrids Mixed'

 Customer Rating

Huge flowered, double, semi-double and a few singles of the best cut flower varieties. Height: 90-150cm (3-5ft).

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    • 1 packet (40 dahlia seeds)

    • Despatch: By end of May 2016
    •  
    • £2.99

Zinnia marylandica 'Double Zahara Strawberry'

Boasting an exceptionally long flowering period, we believe Zinnia 'Double Zahara Strawberry' to be the best double, dwarf Zinnia on the market. Large, fully double blooms in a vivid strawberry colour are produced in abundance on compact, low-growing plants. With good heat and drought tolerance and excellent disease resistance, these exciting annuals need little maintenance to put on a fabulous display. Height and spread: 45cm (18"). More info
    • 1 packet (12 zinnia seeds)

    • Despatch: By end of May 2016
    •  
    • £3.79

Begonia x tuberhybrida 'Scentsation Mixed' F1 Hybrid

The very first fragrant Begonia from seed! These vigorous plants produce wonderful, double to semi-double, pastel-coloured flowers and are stunning grown in individual pots or mixed containers. On damp mornings and sunny days, your garden will be filled with a delightful medley of fragrances from fresh lemon to a soft rose scent. This T&M New and Exclusive is sure to sell out, so place your order fast!

Culinary note: Add the bright coloured petals to sandwiches or salads for a light lemon taste and crisp texture. For more details about edible flowers click here.

More info
    • 1 packet (50 begonia seeds)

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

Dahlia variabilis 'Cactus Hybrids Mixed'

 Customer Rating

Curvaceous, spiky blooms, huge cut flower source, many fully double and mostly true to type. Superb too in the flower border for late summer/autumn blooms. Flowers late summer/autumn. Height 3-4ft. Planting distance 27 inches.

More info
    • 1 packet (56 dahlia seeds)

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

Thunbergia alata 'Superstar Orange'

Black-eyed Susan

 Customer Rating
A stunning bright orange Black-Eyed Susan with the largest flowers we have ever seen on a seed raised Thunbergia. Vigorous plants quickly cover a trellis against a sunny fence, or look spectacular growing up an obelisk in a container.
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    • 1 packet (12 thunbergia seeds)

    • Despatch: By end of May 2016
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    • £3.99

Lobelia erinus 'Cascade Mixed'

 Customer Rating

These trailing lobelia plants produce fountains of bloom in burgundy, violet, lilac and Cambridge blue, as well as a few bicolours! Lobelia 'Cascade' Mixed 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. Trails to: 25cm (10"). Spread: 15cm (6").

More info
    • 1 packet (1500 lobelia seeds)

    • Despatch: By end of May 2016
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    • £2.69

Aster 'Milady Mixed'

Callistephus chinensis, China Aster

Excellent for bedding , these plants are robust, bushy and very wilt resistant. Well formed, globular, weather resistant flowers in blue, pink, rose, rose-red and white are produced over a long period. Useful as a summer flowering pot plant, for window boxes etc. More info
    • 1 packet (150 aster seeds)

    • Despatch: By end of May 2016
    •  
    • £2.99

Dahlia variabilis 'Showpiece Mixed Hybrids'

Several plants from this seed have won prizes on the show bench in USA, UK, Australia and New Zealand. This breeding produces sensational miniature decorative dahlias, very double and 3-4in across of a quality normally associated only with the most carefully selected of vegetatively propagated varieties. They have straight, strong stems and are remarkably floriferous in rich, bright colours including gold, crimson, purple, apricot and many shades of red and pink. More info
    • 1 packet (35 dahlia seeds)

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

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 zinnia seeds)

    • Despatch: By end of May 2016
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    • £1.99

Begonia x tuberhybrida 'Apricot Shades Improved' F1 Hybrid

 Customer Rating
A best seller, Begonia Apricot Shades is as versatile as it is beautiful! Large, cascading double blooms in sunshine shades of apricot and lemon will pour from your containers from July to October. These tuberous begonias will perform whatever the weather, in sun or semi shade. The trailing habit of Begonia Apricot Shades makes them ideal for hanging baskets, window boxes and flower pouches for a really impressive display that will light up even a shady corner. Height: 30cm (12"). Spread: 45cm (18").

Culinary note: Add the bright coloured petals to sandwiches or salads for a light lemon taste and crisp texture. For more details about edible flowers click here.

More info
    • 1 packet (15 begonia seeds)

    • Despatch: By end of May 2016
    •  
    • £3.99

Dahlia variabilis 'Bishop's Children'

A fiery mix of such striking colour, yet with the innocent flower faces of Bishop's Children. Mid-height, and blends extremely well into borders. However, be warned that a colour eruption may occur! Spectacular in bedding and containers, and as a cut flower.Height: 60-75cm (24-30 inches). Planting distance 12-18 inches.
More info
    • 1 packet (50 dahlia seeds)

    • Despatch: By end of May 2016
    •  
    • £2.99