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 19 products.
 

Rudbeckia hirta 'Green Eyes'

Coneflower, Rudbeckia 'Irish Eyes', Black-eyed Susan

Unique, with pointed yellow petals and olive green eye. Well branched, good for cutting.
More info
    • 1 packet (500 rudbeckia seeds)

    • Despatch: Within 1 days
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    • £0.99

Rudbeckia hirta 'Becky Mixed'

Coneflower, Black-eyed Susan

For the first time you can grow this cheerful, free flowering annual in containers and hanging baskets! Becky produces extra dwarf plants, neat and compact in a well balanced mixture of lemon to bright orange flowers, each with a slightly darker contrasting centre disc. They now make ideal basket and container plants flowering right up to first frost, producing large flowers measuring up to 15cm (6in) across! Flowers mid summer to frost. Height 20-25cm (8-10in).
More info
    • 1 packet (50 rudbeckia seeds)

    • Despatch: Within 1 days
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    • £2.19

Heliotrope 'Dwarf Marine'

Heliotropium, Cherry Pie, Heliotropium peruvianum

Once you've experienced the sweet, pungent scent, coming from Heliotrope, or 'cherry pie' as it is commonly called, on a still summer evening you won't want to be without it. Few plants can fill the air with such a heady fragrance as this. Marine is a royal purple, large flowered yet compact form with attractive, dark green foliage and bushy habit. Excellent for beds, borders and as a summer flowering pot plant. Flowers summer. Height 45cm (18in). More info
    • 1 packet (150 heliotrope seeds)

    • Despatch: Within 1 days
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    • £2.99

Rudbeckia hirta 'Prairie Sun'

Coneflower, Black-eyed Susan

 Customer Rating

An impressive debut for beds and borders, this unique new plant was awarded a Fleuroselect Gold Medal. The unusual blooms with central green cones and bright orange petals radiating back to lemon yellow, make dazzling cut flowers.

More info
    • 1 packet (25 rudbeckia seeds)

    • Despatch: Within 1 days
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    • £3.49

Rudbeckia hirta 'Kelvedon Star'

Coneflower, Black-eyed Susan

Bright and cheerful flowers all summer long with this new introduction. The breeding techniques required to fix a pattern in flowers can be most painstaking, but invariably it achieves a striking combination that makes a wonderful garden plant and in this case the finest of cut flowers too. Masses of huge 4in flowers in bright yellow with the darkest brown centre which gives a welcome extension of colour to the late summer border. Ideal for cutting, also beds and borders. Height 75-90cm (30-36in).
More info
    • 1 packet (100 rudbeckia seeds)

    • Despatch: Within 1 days
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    • £2.99

Zinnia marylandica 'Zahara Sunburst'

Another great Zinnia from the popular Zahara range! Zinnia marylandica 'Zahara Sunburst' boasts particularly large red and yellow bicolour blooms for a bedding variety - the first of this colour to be available from seed! These compact, dwarf annuals are free-flowering, and show excellent garden performance along with good disease resistance. The perfect low maintenance bedding plant for containers, beds, borders and wildlife gardens, where they will attract plenty of butterflies to their nectar rich flowers. Height and spread: 40cm (16"). More info
    • 1 packet (15 zinnia seeds)

    • Despatch: Within 1 days
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    • £2.99

Zinnia elegans 'Molino Mixed'

Fabulous well branched plants produce a profusion of open daisy-like flowers in a wonderful mix of clear, vibrant colours. Zinnia elegans ÔMolino Mixed' is compact and bushy making it perfect for filling beds or plugging gaps in borders. The nectar rich blooms will attract plenty of pollinating insects to your garden, and make eyecatching cut flowers too. A superb variety offering excellent value and outstanding garden performance. Height and spread: 40cm (16"). More info
    • 1 packet (100 zinnia seeds)

    • Despatch: Within 1 days
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    • £1.49

Ageratum houstonianum 'Blue Mink'

Floss Flower

 Customer Rating
This relatively old variety of flossflower remains popular for good reason. The compact, uniform plants bear large, fluffy, powder-blue flowers. With a vigorous, open habit, Ageratum houstonianum 'Blue Mink' is perfect for adding texture and colour to bedding, borders and containers. Try growing ageratum in wildlife gardens where they will attract butterflies to their blooms. Height: 30cm (12"). Spread: 30cm (12").
More info
    • 1 packet (1500 ageratum seeds)

    • Despatch: Within 1 days
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    • £1.99

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 ageratum seeds)

    • Despatch: Within 1 days
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    • £3.39

Rudbeckia hirta 'Cappuccino'

Coneflower, Black-eyed Susan

 Customer Rating

For a fabulous focal point in borders, plant this dazzling rudbeckia! Large 15cm (6in) diameter blooms in bright shades of rusty gold with contrasting darker centres will bloom all summer long. Vigorous, well-branched and heat tolerant plants will produce stunning semi-tall flowers which are perfect for cutting.

More info
    • 1 packet (50 rudbeckia seeds)

    • Despatch: Within 1 days
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    • £2.39

Dahlia variabilis 'Sunny Reggae'

  • Colour combo like no other!
From reds through apricots and oranges, Dahlia 'Sunny Reggae' boasts a colour combination like no other! Exquisite semi-double flowers each have their own unique character, some with collars of small cream petals at their centre, others with blushed petals in contrasting colours. Free-flowering from July to October, these warm Dahlia flowers are highly attractive to bees and other pollinating insects. Bushy and compact, grow dwarf Dahlias in beds, borders or containers for a long and colourful summer display. Height: 50cm (20"). Spread: 40cm (16").
More info
    • 1 packet (40 dahlia seeds)

    • Despatch: Within 1 days
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    • £2.79

Dahlia variabilis 'Dandy Improved Mixed'

Cheery dwarf Dahlias are perfect for brightening up beds, containers and the front of borders. Dahlia variabilis ÔDandy Improved Mixed' is the result of years of selection to bring together the best range of colours and flower forms. These compact bedding Dahlias produce long lasting blooms that attract pollinating insects and make lovely cut flowers. Height: 60cm (24"). Spread: 45cm (18"). More info
    • 1 packet (80 dahlia seeds)

    • Despatch: Within 1 days
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    • £1.99