Thompson & Morgan

Important delivery notice
The products on this site are only delivered to UK addresses. If you require delivery to another country please visit one of our other sites below.

Refine Results

Refine by..

Email Newsletter

Sign up to our newsletter

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 175 products.
 

Cosmos sulphureus 'Brightness Mixed'

 Customer Rating

Possibly the most free-flowering cosmos of this type. Dwarf and bushy plants are covered with flowers in a delightful mixture of gold, lemon, orange and red from early summer through to the autumn frosts. Spectacular when planted towards the front of annual borders or in containers.

More info
    • 1 packet (100 cosmos seeds)

    • Despatch: Within 1 days
    •  
    • £2.69

Marigold 'Tomato Growing Secret'

Tagetes patula, French Marigold

Canny gardeners have been growing white fly repelling African and French marigolds alongside their tomatoes for decades. But we know that some marigolds make better white fly deterrents than others, and we've discovered the best there is! We're keeping the variety name under wraps, but we're happy to make it available to serious tomato growers. Try it this season alongside greenhouse and outdoor tomatoes – you'll even see your tomato plants grow better and bear more fruit with our marigolds around them.

 

Culinary note: French Marigold flowers are edible.

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

More info
    • 1 packet (50 marigold seeds)

    • Despatch: Within 1 days
    •  
    • £2.69

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 cosmos seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Cosmos bipinnatus 'Purity'

 Customer Rating
Ferny foliage and graceful pure white flowers up to 4in or more in diameter make this an effective and popular, easy annual. Flowers summer to autumn. Height 3 to 4 feet.
More info
    • 1 packet (100 cosmos seeds)

    • Despatch: Within 1 days
    •  
    • £2.69

Cosmos bipinnatus 'Gazebo Mixed'

 Customer Rating
A mid-height, easy to grow annual with well branched plants which come into flower earlier than most varieties. The attractive fern-like foliage is crowned with many large blooms of velvet red, rose-pink and pure white. An ideal border filler, or simply use in a large container or as a bedding plant. Flowers summer. Height: 60cm (24in).
More info
    • 1 packet (100 cosmos seeds)

    • Despatch: Within 1 days
    •  
    • £2.99

Marigold 'French Vanilla' F1 Hybrid

Tagetes erecta, African Marigold

 Customer Rating
A triumph in plant breeding! A real creamy white flowered Marigold and at last something different in the colour spectrum from oranges and lemons. Flowers are pure in colour, 7.5cm (3in) across and prolific too. There is also a master stroke - 'French Vanilla' has less of the pungent Marigold smell. A definite improvement! Use them in formal or informal bedding, where they will contrast superbly with other bright or pastel flowers. A refreshing plant for the patio container too. Height: 30-38cm (12-15in).
More info
    • 1 packet (20 marigold seeds)

    • Despatch: Within 1 days
    •  
    • £4.89

Begonia x tuberhybrida 'Blackmore & Langdon's Large Flowered Picotees Mixed'

 Customer Rating
Blackmore &: Langdon have specialised in breeding tuberous begonias since 1901, and have won over 70 gold medals at the Chelsea Flower Show for their eye-catching displays. T&M are delighted to be able to offer this spectacular large flowered picotee mixture producing high quality blooms in a wide range of picotee shades perfect for growing in containers. Being a seed raised mixture you may even find an unusual colour combination never seen before! Height: 40-45cm (16-18in).

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

More info
    • 1 packet (20 begonia seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

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
    •  
    • £0.99

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: Within 1 days
    •  
    • £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: Within 1 days
    •  
    • £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: Within 1 days
    •  
    • £1.99