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Seeds to sow in September

September is the start of a new growing rhythm. Warm days often continue, but cooler nights make it important to pick the right seeds for the season ahead. Focus on hardy crops, fast leafy greens, and varieties that grow well under cover. Greenhouses, cold frames and cloches become especially useful now, helping you keep growth going for longer. September sowing can set you up for fresh harvests into autumn and, with the right protection, even into winter. Browse this collection for seeds that suit September conditions and keep your garden productive beyond summer.

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RHS Flowers for Cutting Seed Collection 6 Cut Flower Varieties | Flower Seeds | 5011775290362 5011775290362 | AllotMate Essentials
RHS Flowers for Cutting Seed Collection 6 Cut Flower Varieties | Flower Seeds | 5011775290362 5011775290362 | AllotMate Essentials Sold out
£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item

RHS Flowers for Cutting Seed Collection 6 Cut Flower Varieties

Mr Fothergill's
Out of stock

Grow your own beautiful bouquets with the Mr Fothergill’s RHS Flowers for Cutting Seed Collection. Carefully curated by RHS experts, this collectio...

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£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item
Sold out
RHS Flowers for Drought Resistance Seed Collection 6 Heat Tolerant Varieties | Flower Seeds | 5011775290379 5011775290379 | AllotMate Essentials
RHS Flowers for Drought Resistance Seed Collection 6 Heat Tolerant Varieties | Flower Seeds | 5011775290379 5011775290379 | AllotMate Essentials
£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item

RHS Flowers for Drought Resistance Seed Collection 6 Heat Tolerant Varieties

Mr Fothergill's
Only 4 left!

Grow vibrant colour even in dry conditions with the Mr Fothergill’s RHS Flowers for Drought Resistance Seed Collection. Carefully curated by RHS ex...

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£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item
RHS British Wildflowers Seed Collection 6 Native Varieties | Flower Seeds | 5011775290423 5011775290423 | AllotMate Essentials
RHS British Wildflowers – Native Seed Mix for Pollinators | Mr Fothergill’s | Flower Seeds | 30614 5011775290423 | AllotMate Essentials Sold out
£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item

RHS British Wildflowers Seed Collection 6 Native Varieties

Mr Fothergill's
Out of stock

Bring timeless British countryside charm into your garden with the Mr Fothergill’s RHS British Wildflowers Seed Collection. Carefully curated by RH...

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£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item
Sold out
RHS Flowers for Fragrance Seed Collection 6 Scented Varieties | Flower Seeds | 5011775290393 5011775290393 | AllotMate Essentials
RHS Flowers for Fragrance Seed Collection 6 Scented Varieties | Flower Seeds | 5011775290393 5011775290393 | AllotMate Essentials Sold out
£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
1270.0item | £0.03 / 6item

RHS Flowers for Fragrance Seed Collection 6 Scented Varieties

Mr Fothergill's
Out of stock

Fill your garden with beautiful scent using the Mr Fothergill’s RHS Flowers for Fragrance Seed Collection. Carefully curated by RHS experts, this c...

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£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
1270.0item | £0.03 / 6item
Sold out
RHS Vegetables for Easy Growing Collection 6 Varieties, Curated Vegetable Seeds for Simple and Reliable Cropping | Vegetable Seeds | 5011775290454 5011775290454 | AllotMate Essentials
RHS Vegetables for Easy Growing Collection 6 Varieties, Curated Vegetable Seeds for Simple and Reliable Cropping | Vegetable Seeds | 5011775290454 5011775290454 | AllotMate Essentials
£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item

RHS Vegetables for Easy Growing Collection 6 Varieties, Curated Vegetable Seeds for Simple and Reliable Cropping

Mr Fothergill's
Only 1 left!

The RHS Vegetables for Easy Growing Collection by Mr Fothergill’s is a carefully selected mix of 6 reliable vegetable varieties chosen for their st...

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£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item
RHS Flowers for Pollinators Seed Collection 6 Bee Friendly Varieties | Flower Seeds | 5011775290416 5011775290416 | AllotMate Essentials
RHS Flowers for Pollinators Seed Collection 6 Bee Friendly Varieties | Flower Seeds | 5011775290416 5011775290416 | AllotMate Essentials
Sold out
£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item

RHS Flowers for Pollinators Seed Collection 6 Bee Friendly Varieties

Mr Fothergill's
Out of stock

Support bees, butterflies and other beneficial insects with the Mr Fothergill’s RHS Flowers for Pollinators Seed Collection. Carefully curated by R...

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£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item
Sold out
RHS Flowers for Hanging Baskets Seed Collection 6 Trailing Varieties | Flower Seeds | 5011775290409 5011775290409 | AllotMate Essentials
RHS Flowers for Hanging Baskets Seed Collection 6 Trailing Varieties | Flower Seeds | 5011775290409 5011775290409 | AllotMate Essentials
Sold out
£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item

RHS Flowers for Hanging Baskets Seed Collection 6 Trailing Varieties

Mr Fothergill's
Out of stock

Create vibrant, cascading displays with the Mr Fothergill’s RHS Flowers for Hanging Baskets Seed Collection. Carefully curated by RHS experts, this...

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£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item
Sold out
RHS Flowers for Easy Growing Seed Collection 6 Beginner Friendly Varieties | Flower Seeds | 5011775290386 5011775290386 | AllotMate Essentials
RHS Flowers for Easy Growing Seed Collection 6 Beginner Friendly Varieties | Flower Seeds | 5011775290386 5011775290386 | AllotMate Essentials
Sold out
£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item

RHS Flowers for Easy Growing Seed Collection 6 Beginner Friendly Varieties

Mr Fothergill's
Out of stock

Make flower growing simple and rewarding with the Mr Fothergill’s RHS Flowers for Easy Growing Seed Collection. Carefully curated by RHS experts, t...

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£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item
Sold out
RHS Flowers for Containers Seed Collection 6 Colourful Container Varieties | Flower Seeds | 5011775290355 5011775290355 | AllotMate Essentials
RHS Flowers for Containers Seed Collection 6 Colourful Container Varieties | Flower Seeds | 5011775290355 5011775290355 | AllotMate Essentials
£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item

RHS Flowers for Containers Seed Collection 6 Colourful Container Varieties

Mr Fothergill's
Only 1 left!

Create vibrant seasonal displays with the Mr Fothergill’s RHS Flowers for Containers Seed Collection. Carefully curated by RHS experts, this collec...

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£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item
RHS Herbs for Containers Collection 6 Varieties, Curated Herb Seed Collection for Pots and Patios | Herb Seeds | 5011775290430 5011775290430 | AllotMate Essentials
RHS Herbs for Containers Collection 6 Varieties, Curated Herb Seed Collection for Pots and Patios | Herb Seeds | 5011775290430 5011775290430 | AllotMate Essentials
£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item

RHS Herbs for Containers Collection 6 Varieties, Curated Herb Seed Collection for Pots and Patios

Mr Fothergill's
Only 1 left!

The RHS Herbs for Containers Collection by Mr Fothergill’s is a thoughtfully curated seed selection designed to bring fresh flavour to patios, balc...

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£5.69 - £5.69
£5.69
£5.69 - £5.69
£5.69
6.0item | £0.95 / item
RHS Calendula Fiesta Gitana Seeds 175 Seeds, Hardy Annual Edible Flower, Yellow and Orange Summer Blooms | Flower Seeds | 5011775274034 5011775274034 | AllotMate Essentials
RHS Calendula Fiesta Gitana Seeds 175 Seeds, Hardy Annual Edible Flower, Yellow and Orange Summer Blooms | Flower Seeds | 5011775274034 5011775274034 | AllotMate Essentials
£3.25 - £3.25
£3.25
£3.25 - £3.25
£3.25

RHS Calendula Fiesta Gitana Seeds 175 Seeds, Hardy Annual Edible Flower, Yellow and Orange Summer Blooms

Mr Fothergill's
Only 5 left!

RHS Calendula Fiesta Gitana Seeds by Mr Fothergill’s produce neat and compact hardy annual plants covered in large, fully double blooms. Flowers co...

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£3.25 - £3.25
£3.25
£3.25 - £3.25
£3.25
RHS Corn Salad Medaillon Seeds,500 Seeds, Award Winning Leaf Vegetable Seeds for Winter Harvests | Vegetable seeds | 5011775273518 5011775273518 | AllotMate Essentials
RHS Corn Salad Medaillon Seeds,500 Seeds, Award Winning Leaf Vegetable Seeds for Winter Harvests | Vegetable seeds | 5011775273518 5011775273518 | AllotMate Essentials
£2.89 - £2.89
£2.89
£2.89 - £2.89
£2.89

RHS Corn Salad Medaillon Seeds,500 Seeds, Award Winning Leaf Vegetable Seeds for Winter Harvests

Mr Fothergill's
Only 5 left!

RHS Corn Salad Medaillon Seeds by Mr Fothergill’s are productive leaf vegetable seeds designed to produce compact rosettes of glossy, rounded leave...

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£2.89 - £2.89
£2.89
£2.89 - £2.89
£2.89
RHS ONION (Spring) Matrix | Vegetable Seeds | 16755 5.01178E+12 | AllotMate Essentials
£3.59 - £3.59
£3.59
£3.59 - £3.59
£3.59

RHS ONION (Spring) Matrix

Mr Fothergill's
Only 1 left!

RHS Onion Spring Matrix Seeds produce a reliable, winter hardy spring onion variety that is slow to form bulbs, ensuring long, straight stems that ...

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£3.59 - £3.59
£3.59
£3.59 - £3.59
£3.59
RHS RADISH Escala F1 | Vegetable Seeds | 18638 5011775273686 | AllotMate Essentials
£3.59 - £3.59
£3.59
£3.59 - £3.59
£3.59

RHS RADISH Escala F1

Mr Fothergill's
Only 1 left!

RHS Radish Escala F1 Seeds produce high quality, bright red radishes with excellent flavour and a crisp, refreshing texture. This reliable F1 varie...

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£3.59 - £3.59
£3.59
£3.59 - £3.59
£3.59
RHS Radish Pink Beauty Seeds, Crisp Mild Radishes, 500 Seeds | Vegetable Seeds | 12290 5011775273709 | AllotMate Essentials
£2.89 - £2.89
£2.89
£2.89 - £2.89
£2.89

RHS Radish Pink Beauty Seeds, Crisp Mild Radishes, 500 Seeds

Mr Fothergill's
Only 4 left!

RHS Radish Pink Beauty is a reliable and easy to grow radish variety producing beautifully smooth, bright pink roots with a crisp texture and mild,...

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£2.89 - £2.89
£2.89
£2.89 - £2.89
£2.89
RHS RADISH Rudi | Vegetable Seeds | 11167 5011775273716 | AllotMate Essentials
£2.89 - £2.89
£2.89
£2.89 - £2.89
£2.89

RHS RADISH Rudi

Mr Fothergill's
Only 1 left!

RHS Radish Rudi is a classic, reliable radish variety producing smooth, bright red, globe shaped roots with a crisp texture and excellent flavour. ...

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£2.89 - £2.89
£2.89
£2.89 - £2.89
£2.89
Mr Fothergill’s RHS Turnip Tokyo Cross F1 Seeds 500 Seeds, Award Winning Fast Growing White Turnip | Vegetable Seeds | 5011775273808 5011775273808 | AllotMate Essentials
RHS Turnip Tokyo Cross F1 500 Seeds | Vegetable Seeds | 17125 5011775273808 | AllotMate Essentials
£3.25 - £3.25
£3.25
£3.25 - £3.25
£3.25
500.0item | £0.01 / item

Mr Fothergill’s RHS Turnip Tokyo Cross F1 Seeds 500 Seeds, Award Winning Fast Growing White Turnip

Mr Fothergill's
Only 5 left!

RHS Turnip Tokyo Cross F1 Seeds by Mr Fothergill’s produce smooth, porcelain white roots with a fine texture and deliciously mild flavour. This exc...

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£3.25 - £3.25
£3.25
£3.25 - £3.25
£3.25
500.0item | £0.01 / item

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