Since 1903, Unwins has been a well-known and highly respected name amongst gardeners. Originally specialising in flower seed, Unwins continues to be a leader in the development of varieties of sweet pea but has also now diversified into vegetable seed, providing our customers with a flavoursome choice to grow year after year. We are proud to continue that famous heritage as part of the Marshalls Garden family.

Unwins Seeds from Marshalls

No matter the way your garden grows, from a courtyard city garden to acres in the countryside, you can enjoy the journey of watching seeds grow into beautiful flowers. From classic bedding for a patio full of colour, to swathes of wildflowers in borders to set the bees abuzz, or to the timeless beauty of a classic sweet pea, our range offers great value for money.

Established in 1903, Unwins sits side by side with Marshalls Garden as our specialist heritage brand for flower seeds. Unwins shares all the expertise in seed selection and the testing of Marshalls Garden, and offers the same 100% satisfaction guarantee on every packet we send to you. Like Marshalls Garden, Unwins also offer an excellent choice of gardeners' favourites with over 300 varieties, and over 50 exciting additions for 2022.

Look out for some of our best tips and advice to create a haven of biodiversity, top picks for cut flowers, edible flowers and those that the bees simply love.

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Sowing a native wildflower meadow in your garden, even if it's just a small patch, doesn't just look good, it benefits the environment too.


Ranging from dwarf varieties to giants, sunflowers are always spectacular, with striking flowerheads that are very popular with pollinators.


With their delicate, airy foliage and sensational flowers, cosmos look spectacular in summer borders. To keep them flowering, deadhead regularly.

Sweet Peas - Raised by Unwins

William Unwin sold his first sweet pea in 1903, and from there the Unwins story began. Since then, having become one of the world's first and finest seed innovators, Unwins still hold one of the finest ranges of sweet peas that are loved by gardeners nationwide. Here at Marshalls, we're proud to continue their story, helping gardeners find some of the best of classic Unwins-bred Spencer types, the ever popular modern Grandifloras, and some of the latest breeding breakthroughs with picotee and bi-colours to bring bursts of colour and joy to your garden.


For a Helping Hand

How to Grow Sweet Peas

Sweet peas are a must for any garden.They’re elegant, fragrant, great in borders climbing up trellises or wig-wam frames, disguising an unsightly wall or even scrambling over shrubs in a less-formal display.


How to Grow Wild Flowers

From poppy plants to white clover, cornflowers, pheasant eye and toadflax, growing wildflowers in your garden gives you vibrant colours, textures and a range of attractive plants through spring and summer.

New Flower Seeds for 2022

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