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 74 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
    •  
    • £3.19

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

Marigold 'Durango Tangerine' F1 Hybrid

Tagetes patula, French Marigold

A luxuriant variety with intense, rich, orange anemone-like flower heads, borne on branching, uniform plants. Exceptionally early flowering with outstanding garden performance. Height: 20-25cm (8-10in).

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

More info
    • 1 packet (40 seeds)

    • Despatch: Within 3 days
    •  
    • £2.69

Marigold 'Durango Bee' F1 Hybrid

Tagetes patula, French Marigold

A luxuriant variety with intense, rich, orange and yellow anemone-like flower heads, borne on branching, uniform plants. Exceptionally early flowering with outstanding garden performance. Height: 20-25cm (8-10in).

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

More info
    • 1 packet (40 seeds)

    • Despatch: Within 3 days
    •  
    • £2.69

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.
More info
    • 1 packet (90 seeds)

    • Despatch: Within 3 days
    •  
    • £3.99

Ageratum houstonianum 'Blue Danube' F1 Hybrid

Floss Flower

A large-flowered, vigorous variety of annual ageratum with powder-puff flower heads of soft, lavender blue. The fluffy, weather resistant blooms are particularly attractive to butterflies. With a dense, compact habit, Ageratum houstonianum 'Blue Danube' is perfect for adding texture and colour to bedding, borders and containers. Height: 20cm (8”). Spread: 25cm (10”).
More info
    • 1 packet (100 seeds)

    • Despatch: Within 3 days
    •  
    • £3.19

Marigold 'Durango Red'

Tagetes patula, French Marigold

An outstanding French Marigold because of the wonderful anemone-like flowers of mahogany-red. Their garden performance, uniformity, early flowering and basal branching make them a summer garden necessity. Height: 20-25cm (8-10in).

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

More info
    • 1 packet (45 seeds)

    • Despatch: Within 3 days
    •  
    • £2.69

Antirrhinum majus 'Kim Bicolor Mixed' F1 Hybrid

Snapdragon

An exclusive cocktail of bright, bicoloured blooms, freely flowering on dwarf, compact, well-branched plants. Sure to create a dazzling display when used for bedding, containers or borders.
More info
    • 1 packet (50 seeds)

    • Despatch: Within 3 days
    •  
    • £2.89

Antirrhinum 'Axiom Series Mixed' F1 Hybrid

Snapdragon

The highest quality Antirrhinum we have ever trialed. Long, tall flower spikes, with a strong, upright habit in a magnificent formula mixture of seven stunning colours. Ideal for adding height to borders or as a long lasting cut flower. Height: 90-110cm (36-42in) More info
    • 1 packet (30 seeds)

    • Despatch: Within 3 days
    •  
    • £3.49

Gazania splendens 'New Day Mix' F1 Hybrid

Treasure Flower

A sensational blend of vibrant Gazania, bringing together all forms of colours and stripes in one fabulous mix. The short stems support large, wide blooms that open quickly and remain open for longer. Gazania splendens 'New Day Mix' are ideal for adding long lasting colour to summer bedding schemes and patio containers. These versatile plants will even tolerate windy coastal positions. Height and spread: 25cm (10"). More info
    • 1 packet (20 seeds)

    • Despatch: Within 3 days
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    • £3.19

Antirrhinum majus 'Double Madame Butterfly Mixed' F1 Hybrid

Snapdragon

A flower in an entirely new form. Its large completely double, azalea-shaped blooms provide a riot of colour and its reliability and impressiveness are borne out by rare award of an All-America and All-Britain Selections Bronze Medal. Ideal for borders, bedding and superb cut flowers. Flowers summer. Height: 69-90cm (24-36in) More info
    • 1 packet (60 seeds)

    • Despatch: Within 3 days
    •  
    • £3.69