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 27 products.
 

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 petunia seeds)

    • Despatch: Within 1 days
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    • £3.49

Lobelia pendula 'Monsoon'

  • 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 lobelia seeds)

    • Despatch: Within 1 days
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    • £2.29

Salvia farinacea 'Fairy Queen'

Mealy Sage, Mealycup Sage

Unique breeding has brought us this very visually appealing Salvia. Bushy, compact plants bear multiple spikes of attractive blue and white bicoloured flowers on distinctive dark stems. Flowers all summer and continues through to October in borders or containers. Height: 35-45cm (14-18in).
More info
    • 1 packet (40 salvia seeds)

    • Despatch: Within 1 days
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    • £0.99

Heliotrope 'Marine'

Heliotropium arborescens, Cherry Pie, Heliotropium peruvianum

Fragrant, royal purple, large flowered compact form with smart, deep green foliage.
More info
    • 1 packet (100 heliotrope seeds)

    • Despatch: Within 1 days
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    • £2.79 £0.99

Morning Glory 'Carnevale di Venezia'

Ipomoea purpurea, Convolvulus purpureus, Pharbitis purpurea

A vigorous climber producing masses of spectacular, striped blue and pink blooms with intricate markings, as if painted individually. Flowers all summer, transforming your garden with all the dazzling colours of the Venice Carnival. Twining climber to 2m (6ft). More info
    • 1 packet (35 morning glory seeds)

    • Despatch: Within 1 days
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    • £0.99

Antirrhinum majus 'Purple Twist' F1 Hybrid

Snapdragon

Classic white snapdragon flowers with random stripes and flecks of vibrant purple create a fascinating 'paint splashed' effect. Unusually tall, this exciting snapdragon is ideal for the back of beds and borders, where the handsome spires will appear from early summer through to September. As with most snapdragons, the blooms of Antirrhinum 'Purple Twist' attract bees and other pollinating insects, and make striking cut flowers for a vase indoors. Height: 90cm (35"). Spread: 45cm (18").
More info
    • 1 packet (30 antirrhinum seeds)

    • Despatch: Within 1 days
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    • £2.99

Cobaea scandens

Cup And Saucer Vine, Cathedral Bells, Cups And Saucers, Mexican Ivy

 Customer Rating
A showy climber for the cool greenhouse, conservatory, and also forming a very decorative screen on trellis or south facing wall in milder areas. The large bell shaped 'cup and saucer' flowers are often 6cm (2½ in) across. Flowers late summer. Climber.
More info
    • 1 packet (9 cobaea seeds)

    • Despatch: Within 1 days
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    • £3.69

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 petunia seeds)

    • Despatch: Within 1 days
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    • £3.99

Butterfly Pea

Clitoria ternatea, Blue Pea

A fast-growing tropical climber producing a wonderful display of 5cm (2in) blue flowers from mid to late summer. Ideal for covering trellis in a sheltered part of the garden where it will attract bees and butterflies, or as a perennial grown in a conservatory. Climbs 1.8m-2.4m (6-8 feet). More info
    • 1 packet (20 seeds)

    • Despatch: Within 1 days
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    • £2.99

Antirrhinum majus 'Bronze Dragon'

Snapdragon

These eye-catching, bushy, dwarf plants have the darkest, almost black foliage we have ever seen on an Antirrhinum! Bred by Thompson & Morgan, Bronze Dragon looks almost as attractive before flowering as it does when smothered in its gorgeous, purple and white bicoloured blooms. Truly outstanding in borders or containers and can also boast very good rust resistance.
More info
    • 1 packet (100 antirrhinum seeds)

    • Despatch: Within 1 days
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    • £2.99

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 petunia seeds)

    • Despatch: Within 1 days
    •  
    • £3.49