Thompson & Morgan

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Brassica & Leafy Green Seeds

Brussels Sprouts, broccoli, cabbage and cauliflower are just a few of the vegetables classed as brassica and there are plenty to choose from in our online range. Be sure to cover young plants with fine netting to deter birds and other pests.

We have found 27 products.

Broccoli 'Romanesco'

Brassica oleracea (Italica Group)

Romanesco Broccoli is a particularly attractive vegetable with a taste and texture exceeding the finest Calabrese. Broccoli 'Romanesco' is widely grown in Northern Italy and created a great deal of interest when grown at the Scottish Horticultural Research Institute. The 'spears' can be snapped off individually or all together from . To really appreciate the flavour it should be steamed and served as individual heads, garnished with plenty of melted butter. Height: 45cm (18”). Spread: 40cm (16”). More info
    • 1 packet (125 seeds)

    • Despatch: Within 1 days
    • £2.29

Cabbage 'Autumn Mix'

Brassica oleracea (Capitata Group)

  • Enjoy cabbage for over 17 weeks!
  • Get the longest harvest from one packet of seed

We've pulled together three superior cabbages with different cropping times so that you can harvest cabbages over a longer period, from late summer through to early winter. Height: 30cm (12"). Spread: 45cm (18").

This collection comprises:
Cabbage 'Attraction' - The excellent internal structure gives the tastiest white coleslaw ever, or try shredding it raw into winter salads.
Cabbage 'Minicole' F1 Hybrid - A small variety that will stand, ready for cutting for up to four months if necessary.
Cabbage 'Sir' F1 Hybrid - Compact plants producing dense, rounded, ball-heads with an exceptional flavour.
More info
    • 1 packet (40 cabbage seeds)

    • Despatch: Within 1 days
    • £3.99

Clubroot Resistant Collection


The answer to thousands of gardeners' prayers! After over 18 years of conventional breeding against this devastating brassica disease, we are pleased to offer four of the most clubroot-resistant varieties ever grown in T&M trials.

This collection comprises:
Broccoli Monclano F1 - This hardy variety has been selected for top flavour, heavy yields and resistance to clubroot and mildew.
Brussels Sprout Crispus F1 Hybrid - (Autumn-winter) Sow this latest clubroot resistant hybrid variety in the spring for an autumn harvest.
Cabbage Kilaton F1 Hybrid - Kilaton has a very high level of clubroot resistance producing quality autumn ballheads with a solid, dense structure weighing up to 2kgs (4.4lb).
Cauliflower Clapton F1 Hybrid - The first-ever cauliflower to be bred with clubroot resistance! Clapton is a versatile late-summer to late-autumn variety depending on sowing time.
More info
    • 4 packets - 1 of each variety (80 seeds in total)

    • Despatch: Within 1 days
    • £9.99

Brussels Sprout 'Full Season Collection'

Brassica oleracea (Gemmifera Group)

Extend the cropping season with these two superb varieties or Brussel Sprout and enjoy tasty buttons from October through to March. Height: 75cm (30"). Spread: 50cm (20").

  • Brussel Sprout 'Full Season Collection' comprises one packet each of:
  • Brussels Sprout 'Bosworth' - This early maturing, RHS AGM variety produces firm, smooth, dark green, sweet tasting buttons from October.
  • Brussels Sprout 'Trafalgar' - This modern hybrid produces a heavy crop of medium sized, firm button sprouts from mid December to late March that have a superb flavour.

Companion planting: Try growing Brussels sprouts with Nasturtiums to draw cabbage white butterflies away from your crop, and mint to help deter flea beetles.

Useful links:

Companion Planting

More info
    • 2 packets - 1 of each variety (70 brussels sprout seeds in total)

    • Despatch: Within 1 days
    • SAVE £1.69  
    • £6.68 £4.99

Traditional Kitchen Favourite Collection

Grow your own traditional kitchen favourite vegetables from seed and enjoy harvests throughout the year!

  • In this collection you will receive the following varieties:
  • Broccoli 'Belstar' - The firm heads of this RHS AGM variety remain in good condition for a long time, producing plenty of side shoots once the central head is cut
  • Brussels Sprout 'Trafalgar' - Thanks to continuous breeding work striving for a better, sweeter flavour, this modern hybrid has a superb flavour that sets it apart from other varieties
  • Cauliflower 'Gypsy' - Cauliflower 'Gyspy' is a particularly useful summer variety, producing deep, round, white curds without the pink tinge which can often occur on summer Cauliflowers.
  • Parsnip 'Gladiator' - A superb RHS AGM F1 hybrid that is ideal for exhibition, with beautiful silky-smooth blemish free, white skins.
  • Pea 'Hurst Green Shaft' - Pea 'Hurst Green Shaft' is double podded, producing particularly heavy yields of up to 11 peas per 10cm (4") pod.
  • Sweetcorn 'Lark' - Sweetcorn Lark is a tendersweet variety giving superior sweetness with a softer, less chewy texture than supersweets, making kernels more pleasurable to eat as well as easier to digest.
More info
    • 6 packets - 1 of each variety

    • Despatch: Within 1 days
    • SAVE £3.65  
    • £16.64 £12.99