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 15 products.
 

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
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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 seeds)

    • Despatch: Within 3 days
    •  
    • £2.39

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 seeds)

    • Despatch: Within 3 days
    •  
    • £3.49

Zinnia marylandica 'Zahara Mixed'

  • Performs well in wetter British summers
Possibly the best mixture of dwarf bedding zinnias available for an exceptional garden performance. Enjoying hot dry conditions, but also thriving in wet British weather, this vividly colourful mix will flower all summer long. With a strong root system to aid transplanting, and good disease tolerance, Zinnia 'Zahara Mixed' is ideal for borders or containers. Height and spread: 45cm (18").
More info
    • 1 packet (15 seeds)

    • Despatch: Within 3 days
    •  
    • £3.29

Rudbeckia hirta 'Toto'

Coneflower, Black-eyed Susan

Dwarf, compact plants which have plenty of strong side shoots and many rich golden-yellow blooms, each with a deep chocolate central cone. Early to flower over a long period and looking great in all types of weather. An ideal candidate for containers, bedding or grown in groups in the border. Flowers summer. Height: 25cm (10in).
More info
    • 1 packet (50 seeds)

    • Despatch: Within 3 days
    •  
    • £2.99

Rudbeckia hirta 'Rustic Dwarfs Mixed'

Coneflower, Black-eyed Susan

 Customer Rating
Long-stemmed plants with large flowers of rich yellow, gold, bronze and mahogany with black cone. An excellent subject for beds and borders, it will tolerate wet weather. Flowers late summer/autumn. Height only 60cm (24in).
More info
    • 1 packet (350 seeds)

    • Despatch: Within 3 days
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    • £2.69

Zinnia marylandica 'Zahara Starlight Rose'

Truly spectacular 2010 AAS award-winning bedding plant! The pretty white flowers with an attractive pinky-rose centre are 6cm (2.5in) across when fully open. Bushy, dwarf plants flower freely and are so tolerant of such conditions as heat, humidity and drought that they were planted extensively in floral displays at the Beijing Olympics.

Non-stop-flowering Zinnia Zahara Starlight Rose follows on from the success of Zahara Yellow and will similarly attract beneficial insects, such as butterflies, to the garden. A real 'must' for borders this season!

More info
    • 1 packet (15 seeds)

    • Despatch: Within 3 days
    •  
    • £3.29

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 seeds)

    • Despatch: Within 3 days
    •  
    • £1.99

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 seeds)

    • Despatch: Within 3 days
    •  
    • £0.99

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 seeds)

    • Despatch: Within 3 days
    •  
    • £2.99

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 seeds)

    • Despatch: Within 3 days
    •  
    • £2.99

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 seeds)

    • Despatch: Within 3 days
    •  
    • £2.19