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 7 products.

Lobelia erinus 'Blue Cascade'

 Customer Rating
Freely branching plants are covered in myriads of bloom to create clouds of true blue lobelia flowers with a small white eye. Unsurpassable among trailing lobelias, 'Blue Cascade' 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. Height: 15cm (6"). Spread: 25cm (10").
More info
    • 1 packet (1000 lobelia seeds)

    • Despatch: Within 1 days
    • £2.29

Zinnia elegans 'Zinderella Lilac'

Zinnia elegans

Zinderella Zinnias are real eyecatchers! Attractive lilac-pink blooms offer contrasting dark centres and a strong central crest. Add height and interest to the middle of the border. Set behind our Zinnia 'Zinderella Peach' for an orderly tiered display of blooms right through summer. Height: 90cm (36"). Spread 30cm (12") More info
    • 1 packet (18 zinnia seeds)

    • Despatch: Within 1 days
    • £3.49

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
    • £3.39

Brachyscome iberidifolia 'Little Missy'

Swan River Daisy, Brachycome

Each pretty lilac blue, daisy-like bloom has a distinctive yellow central eye surrounded by a white halo. Brachyscome 'Little Missy' blooms over a long period, making it perfect for edging paths and borders or as an eye-catching container plant on a sunny patio. Height and spread: 25cm (10"). More info
    • 1 packet (200 brachyscome seeds)

    • Despatch: Within 1 days
    • £2.19

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).
More info
    • 1 packet (10 bacopa pellets)

    • Despatch:
    • £3.89
    • Out of stock

Brachyscome iberidifolia 'Purple Splendour'

Swan River Daisy, Brachycome

Profuse and long-flowering, Brachyscome 'Purple Splendour' creates a fantastic display throughout summer. The purple Swan River Daisy flowers open above a mass of spreading, ferny foliage. This charming half-hardy annual is ideal for edging paths and borders or filling gaps in window boxes and baskets. Height and spread: 30cm (12"). More info
    • 1 packet (100 seeds)

    • Despatch: Within 1 days
    • £2.69

Felicia bergeriana

Kingfisher Daisy

A very easy to grow annual, known as the Kingfisher Daisy because of its daisy like flowers. Plants form a mat of bright green foliage and from the beginning of summer to first frosts, they will continually be covered in flowers of electric blue with a typical yellow daisy-like centre. Good value for money, use to edge borders and beds, or simply in containers and window boxes. Flowers summer to autumn. Height 15cm (6in).

More info
    • 1 packet (250 seeds)

    • Despatch: Within 1 days
    • £2.99