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 70 products.
 

Nasturtium 'Crimson Emperor'

Tropaeolum majus, Indian Cress

Masses of deep crimson blooms with golden yellow throats cover the lax, sprawling stems of this vigorous variety. The semi-trailing habit and lush green foliage make Nasturtium 'Crimson Emperor' an ideal choice for summer groundcover. Perfect covering banks, filling beds and borders or spilling from baskets and patio containers. Height: 30cm (12"). Spread: 200m (78").

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

Press release: Chance find becomes Thompson & Morgan's Flower of the Year

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    • 1 packet (30 seeds)

    • Despatch: Within 3 days
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    • £2.29

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”).

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    • 1 packet (1500 seeds)

    • Despatch: Within 3 days
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    • £2.69

Nasturtium 'Jewel of Africa'

Tropaeolum majus, Indian Cress

T&M own breeding. At last! Variegated climbing Nasturtiums. Available in a balanced mixture of yellows, reds, creams and peach/pinks with foliage which is attractively marbled and striped with cream, against a light green background. They make fantastic, dramatic container and basket plants or simply use them for effective ground cover. They also look good trailing and climbing over conifers, hedges and short walls. Please Note: Occasionally some plants produce pure green foliage, many but not all will develop variegation at a later stage.

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

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    • 1 packet (25 seeds)

    • Despatch: Within 3 days
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    • £2.89

Lobelia pendula 'Monsoon'

  • Attractive late summer bronze foliage
If you liked Lobelia 'Crystal Palace' then this trailing version is sure to appeal. With a vigorous cascading habit and masses of deep blue flowers, Lobelia 'Monsoon' is ideal for filling baskets and containers or spilling over low walls and rockeries. The bright green summer foliage matures to a rich shade of bronze as the autumn approaches for a spectacular late summer display. Height: 15cm (6"). Spread: 30cm (12").
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    • 1 packet (650 seeds)

    • Despatch: Within 3 days
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    • £1.99

Bacopa cordata 'Snowtopia White'

Sutera cordata

  • Spectacular trailing habit

The trailing, evergreen stems of this half-hardy basket filler bear a smothering of snow white flowers throughout summer. Let bacopa plants tumble from mixed patio containers and baskets for a brilliant display throughout summer. Height: 15cm (6"). Spread: 45cm (18").


Please note: This seed is sold as a multi-seeded pellet for easy sowing into modules or Jiffy 7's to aid easy planting.

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    • 1 packet (10 pellets)

    • Despatch: Within 3 days
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    • £3.69

Bacopa cordata 'Blutopia Blue'

Sutera cordata

A delightful plant with pale blue flowers which is spectacular when planted on its own or with other plants in baskets or containers. Sold as a multi-seeded pellet for easy sowing into modules or Jiffy 7's™ to aid easy planting. Height: 5-15cm (2-6in) - Trailing up to 45cm (18in).
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    • 1 packet (10 pellets)

    • Despatch: Within 3 days
    •  
    • £3.69

Petunia x hybrida 'Purple Velvet' F1 Hybrid

The best ever basket petunia from seed! 'Purple Velvet' out-performs expensive cutting raised Surfinia petunias. Trailing stems, up to 1m (3ft) in length, are continuously smothered in velvety, purple blooms until the first frosts.Excellent for baskets and containers. 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
    •  
    • £3.69

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
    •  
    • £3.69

Nasturtium 'Climbing Mixed'

Tropaeolum majus, Indian Cress

These long-flowering vigorous climbing plants look spectacular when trained over walls, fences and hedges. They lack tendrils, but will scramble happily over trellis work, sheds, fences etc. Flowers summer-autumn. Climber.

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

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    • 1 packet (40 seeds)

    • Despatch: Within 3 days
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    • £1.99

Petunia x hybrida 'Super Cascade Improved' F1 Hybrid

 Customer Rating
The first fully integrated petunia mixture. For hanging baskets, containers and walls. The Super Cascades are much freer flowering and will cascade in 8 different colours - blue, white, pink, blush, cerise, salmon, scarlet and violet from a formula blending of seed. Weather tolerance, heat and wet, is excellent, they bloom from planting out to frost and have good drought tolerance. 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.
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    • 1 packet (90 seeds)

    • Despatch: Within 3 days
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    • £3.99

Marigold 'Boy O' Boy Mixed'

Tagetes patula, French Marigold

 Customer Rating
Mixed - Neat and compact double crested flowers which are produced prolifically from early June until frosts. A petite bright and cheerful variety very suited for windowboxes and the front of the border as well as bedding, tubs etc. Flowers all summer.

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

More info
    • 1 packet (115 seeds)

    • Despatch: Within 3 days
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    • £1.99

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 seeds)

    • Despatch: Within 3 days
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    • £1.49