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 10 products.
 
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
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    • £0.99
Petunia X Hybrida Purple Velvet F1 Hybrid

Petunia x hybrida 'Purple Velvet' F1 Hybrid

The best ever basket petunia from seed! 'Purple Velvet' out-performs expensive cutting raised Surfinia petunias. Trailing stems, up to 1m (3ft) in length, are continuously smothered in velvety, purple blooms until the first frosts.Excellent for baskets and containers. Can also be planted in borders where it will make very effective ground cover. Growing tip: Get the best out of your petunias with our specially formulated Petunia Fertiliser - the perfect balance of nutrients to get them off to a flying start and nourish them through the summer. More info
    • 1 packet (12 seeds)

    • Despatch: Within 2 Days
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    • £3.69
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
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    • £2.09
Petunia Grandiflora Double Cascade Burgundy Plum Vein F1

Petunia grandiflora 'Double Cascade Burgundy Plum Vein' F1 Hybrid

Giant, fully double flowers of burgundy or plum veined, often more than 10cm (4in) across! Add to this its cascading habit and you have one of the very best basket and container plants creating a waterfall of pleated powderpuffs all summer long. Height: 23-30cm (9-12in). Growing tip: Get the best out of your petunias with our specially formulated Petunia Fertiliser - the perfect balance of nutrients to get them off to a flying start and nourish them through the summer.Click here to buy now. More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
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    • £3.69
Petunia Grandiflora Double Cascade Blue F1 Hybrid

Petunia grandiflora 'Double Cascade Blue' F1 Hybrid

Attractive, large fully double blooms in the deepest velvety blue, almost look black when shimmering in the sunshine. The flowers have an added bonus of quickly recovering after a shower of rain. Their cascading habit makes them ideal as groundcover or tumbling over the sides of containers or baskets. Height: 23-30cm (9-12in) Growing tip: Get the best out of your petunias with our specially formulated Petunia Fertiliser - the perfect balance of nutrients to get them off to a flying start and nourish them through the summer. More info
    • 1 packet (30 seeds)

    • Despatch: Within 2 Days
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    • £2.99
Petunia Grandiflora Pendula Lady Purple F1

Petunia grandiflora pendula 'Lady Purple' F1 Hybrid

This genuinely cascading Petunia is smothered in bright purple-pink flowers, each with a black throat. Plants are only 15cm (6in) high and can spread up to 90cm (3ft), making them ideal candidates for all types of container and baskets. Non-stop flowering, even during mild frosts, gales and heavy rain, plants will quickly revive. Because plants are seed raised, you can grow with confidence, assured that there is no risk of virus. Awarded a Fleuroselect Quality Mark. Growing tip: Get the best out of your petunias with our specially formulated Petunia Fertiliser - the perfect balance of nutrients to get them off to a flying start and nourish them through the summer. More info
    • 1 packet (20 seeds)

    • Despatch: Within 2 Days
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    • £3.99
Brachycome Iberidifolia Bravo

Brachyscome iberidifolia 'Bravo'

Swan River Daisy, Brachycome

 An exciting mixture of the "Swan River Daisy" in three distinct bright colours: white, blue and violet, each with a striking black centre - plus a few surprise colour combinations too. A valuable bedding and container plant. Awarded a Fleuroselect Quality Mark. Flowers summer. Height: 20-25cm (8-10in). More info
    • 1 packet (175 seeds)

    • Despatch: Within 2 Days
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    • £2.49
Petunia X Hybrida Sophistica Blue Morn F1 Hybrid

Petunia x hybrida 'Sophistica Blue Morn' F1 Hybrid

An amazing new colour combination never before seen in petunias. The startling blue-purple of the large showy flowers washes away to a pale inner 'eye' in the centre of the blooms. Creates a fabulous free-flowering display in pots or baskets.

 More info
    • 1 packet (12 seeds)

    • Despatch: Within 2 Days
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    • £3.29
Brachycome Iberidifolia Blue Star

Brachyscome iberidifolia 'Blue Star'

Swan River Daisy, Brachycome

 At first glance this delightful Brachycombe may seem like any other, but on closer inspection you will soon discover its flowers are quite unique. Each bushy plant produces masses of attractive violet-blue, star shaped flowers with unusual inwardly curled petals. Flowers all summer in borders or containers. Height: 20-25cm (8-10in). More info
    • 1 packet (200 seeds)

    • Despatch: Within 2 Days
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    • £1.99
Petunia Grandiflora Mirage Blue F1

Petunia grandiflora 'Mirage Blue' F1 Hybrid

Mirage Blue combines the best of both worlds, it has the superb garden performance of the smaller flowered multifloras plus large and showy, up to 7.5cm (3in), richly veined blooms. Recovers quickly from rain, heat or drought and with its compact branching habit is ideal for bedding, window boxes, hanging baskets, tubs etc. Flowers summer. Height: 23cm (9in).

 More info
    • 1 packet (75 seeds)

    • Despatch: Within 2 Days
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    • £2.99