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 26 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
    •  
    • £0.99
Zinnia Elegans Purple Prince

Zinnia elegans 'Purple Prince'

 Customer Rating

Outstanding in Thompson & Morgan trials, these robust plants show excellent garden performance, flowering over a long period and producing an abundance of fully double, deep pink-purple, dahlia-like flowers. This is a taller-than-usual variety of zinnia which will add colour and height to border displays as well as to cut flower arrangements. Zinnia Purple Prince will flower all summer until the first frosts, attracting bees and butterflies as well as the admiration of your neighbours!

 More info
    • 1 packet (100 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.99
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
    •  
    • £3.69

Cobaea scandens

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

    • Despatch: Within 2 Days
    •  
    • £2.99
Ipomoea Purpurea Carnevale Di Venezia

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 seeds)

    • Despatch: Within 2 Days
    •  
    • £0.99
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
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
    •  
    • £3.69
Ipomoea Purpurea Star Of Yelta

Morning Glory 'Star Of Yelta'

Ipomoea purpurea, Convolvulus purpureus, Pharbitis purpurea

  Customer Rating
A stunning and very striking garden plant which can be used as a climber or ground cover subject. The large flower buds open to royal a deep purple, silk-like, 7cm (3in) bloom with rich red vein markings, forming a star from the very centre to the petal tips. You can also grow it in a container where it will cascade over the side, and if supported, will climb to form a dome. Flowers summer. Climber to approximately 180cm (6ft). More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.99
Verbena X Hybrida Blue Lagoon

Verbena x hybrida 'Blue Lagoon®'

Glandularia, Vervain, Verbena x hortensis
The best true-blue Verbena every grown on T&M trials. Clusters of rich blue flowers against deep green foliate, look spectacular in borders or containers. An outstanding garden performer with good mildew resistance, but best of all, is its sweet evening fragrance. Height: 25-30cm (10-12in). More info
    • 1 packet (150 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.99
Antirrhinum Majus Nanum Bronze Dragon

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 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.99

Lobelia erinus 'Mrs Clibran Improved'

Very useful for edging. Deep-blue flowers with a pretty, contrasting white eye. More info
    • 1 packet (2000 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.09
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
    •  
    • £2.99