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 65 products.
 
Lobelia 'Cascade Mixed'

Lobelia erinus 'Cascade Mixed'

,
 Customer Rating

These trailing lobelia plants produce fountains of bloom in burgundy, violet, lilac and Cambridge blue, as well as a few bicolours! Lobelia ‘Cascade’ Mixed 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. Trails to: 25cm (10”). Spread: 15cm (6”).

 More info
    • 1 packet (1500 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49
Lobelia pendula 'Monsoon'

Lobelia pendula 'Monsoon'

  • NEW in 2013
  • Attractive late summer bronze foliage
If you liked Lobelia ‘Crystal Palace’ then this trailing version is sure to appeal. With a vigorous cascading habit and masses of deep blue flowers, Lobelia ‘Monsoon’ is ideal for filling baskets and containers or spilling over low walls and rockeries. The bright green summer foliage matures to a rich shade of bronze as the autumn approaches for a spectacular late summer display. Height: 15cm (6"). Spread: 30cm (12"). More info
    • 1 packet (650 seeds)

    • Despatch: Within 2 Days
    •  
    • £0.99
Dahlia Variabilis Bishop's Children

Dahlia variabilis 'Bishop's Children'

A fiery mix of such striking colour, yet with the innocent flower faces of Bishop's Children. Mid-height, and blends extremely well into borders. However, be warned that a colour eruption may occur! Spectacular in bedding and containers, and as a cut flower.Height: 60-75cm (24-30 inches). Planting distance 12-18 inches. More info
    • 1 packet (50 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.99
Dahlia variabilis 'Starlight Mixed' - Part of the Alan Titchmarsh Collection

Dahlia variabilis 'Starlight Mixed' - Part of the Alan Titchmarsh Collection

 
  • NEW in 2013
Dahlia 'Starlight Mixed' produces fabulous, windswept blooms in every colour of the rainbow. A nice, distinct dahlia for bedding or for planting in big groups in patio pots. Height and spread: 40cm (16"). More info
    • 1 packet (30 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.99
Dahlia Variabilis Dwarf Mixed

Dahlia variabilis 'Dwarf Mixed'

Vivid, large single and semi-double 8cm (3in) flowers. Neat, mound shaped bushes achieving a memorable main bedding display. More info
    • 1 packet (75 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49
Ageratum Houstonianum 'Blue Danube' F1

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 2 Days
    •  
    • £2.99
Thunbergia Alata Superstar Orange

Thunbergia alata 'Superstar Orange'

Black-eyed Susan

  Customer Rating
A stunning bright orange Black-Eyed Susan with the largest flowers we have ever seen on a seed raised Thunbergia. Vigorous plants quickly cover a trellis against a sunny fence, or look spectacular growing up an obelisk in a container. More info
    • 1 packet (12 seeds)

    • Despatch: Within 2 Days
    •  
    • £3.99
Dahlia Variabilis Double Extreme

Dahlia variabilis 'Double Extreme'

Extremely attractive dwarf selection, producing a mass of high quality double and semi double flowers in an rich colour mixture, featuring some unique sunset shades. A stunning addition for beds, borders or containers, providing colour throughout the summer. Height: 45-60cm (18-24 inches). More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.99
Lobelia 'Blue Splash'

Lobelia erinus 'Blue Splash'

Masses of white flowers splashed with marine blue to give an intriguing and unusual effect. Flowering up to 4 weeks earlier than many trailing lobelia varieties, ‘Blue Splash’ makes a sparkling addition to beds, 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 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.49
Lobelia 'Blue Wings'

Lobelia erinus 'Blue Wings'

On T&M's trials we believe we have found the largest flowered bedding lobelia available. Exceptionally abundant cobalt blue flowers cover compact mounds of foliage. With superb weather resistance Lobelia ‘Blue Wings’ makes a sparkling addition to beds, 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: 20cm (8”). More info
    • 1 packet (1000 seeds)

    • Despatch:
    •  
    • £2.99
    • Out of stock
Brachyscome Iberidifolia Little Missy

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 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.99
Lobelia 'Crystal Palace'

Lobelia erinus 'Crystal Palace'

Dainty, deep blue lobelia flowers smother neat globes of foliage that form very dwarf, compact plants. Lobelia ‘Crystal Palace’ makes a sparkling addition to beds, containers, flower Pouches® and window-boxes, and even looks well placed in the rockery. An easy to grow annual that is deservedly popular for its versatility and long flowering period. Height: 10cm (4”). Spread: 15cm (6”). More info
    • 1 packet (2500 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.09