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September flowering seeds

Shop September flowering seeds and grow with confidence from seed

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Used at RHS Chelsea Flower Show
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Showing Seeds Flowering month : September clear all
79 items
Erigeron karvinskianus

Best Seller

25% off

Erigeron karvinskianus
From £2.99
approx 100 seeds
9cm pot
3 × approx 100 seeds
2 litre pot
+ 3 more available
0.75 star 1 star 1 star 1 star 1 star 4.9 5 221 (221)
Verbena bonariensis

Best Seller

25% off

Verbena bonariensis
From £2.62
approx 250 seeds
3 × packets (approx 750 seeds)
9cm pot
2 litre pot
+ 3 more available
0.75 star 1 star 1 star 1 star 1 star 4.7 5 156 (156)
Alchemilla mollis

Best Seller

25% off

Alchemilla mollis
From £2.24
9cm pot
2 litre pot
3 × 9cm pots
6 × 9cm pots
+ 1 more available
0.5 star 1 star 1 star 1 star 1 star 4.6 5 29 (29)
Lavandula angustifolia Munstead

Best Seller

25% off

Lavandula angustifolia 'Munstead'
From £2.62
9cm pot
2 litre pot
3 × 9cm pots
6 × 9cm pots
+ 2 more available
0.25 star 1 star 1 star 1 star 1 star 4.4 5 30 (30)
Stipa tenuissima

Best Seller

25% off

Stipa tenuissima
From £2.84
approx 30 seeds
9cm pot
2 litre pot
3 × 9cm pots
+ 2 more available
0.75 star 1 star 1 star 1 star 1 star 4.8 5 59 (59)
Knautia macedonica

Best Seller

Up to 30% off

Knautia macedonica
From £3.22
approx 40 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
0.5 star 1 star 1 star 1 star 1 star 4.6 5 44 (44)
Muhlenbergia capillaris

Best Seller

25% off

Muhlenbergia capillaris
From £2.99
approx 20 seeds
2 litre pot
3 × 2 litre pots
1 star 1 star 1 star 1 star 1 star 4.9 5 8 (8)
Verbena officinalis var. grandiflora Bampton

25% off

Verbena officinalis var. grandiflora 'Bampton'
From £2.62
approx 50 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
0.75 star 1 star 1 star 1 star 1 star 4.8 5 10 (10)
Angelica gigas

25% off

Angelica gigas
From £2.99
9cm pot
2 litre pot
3 × 9cm pots
6 × 9cm pots
+ 1 more available
0.5 star 1 star 1 star 1 star 1 star 4.5 5 34 (34)
Dahlia merckii

New

25% off

Dahlia merckii
From £4.49
approx 10 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 2 (2)
Ammi majus

Best Seller

25% off

Ammi majus
From £2.17
approx 500 seeds
0.75 star 1 star 1 star 1 star 1 star 4.7 5 6 (6)
Cornfield seed collection

25% off

Cornfield seed collection
£3.99 £2.99
1g packet | seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 2 (2)
Cosmos bipinnatus Purity

25% off

Cosmos bipinnatus 'Purity'
From £2.24
approx 100 seeds
0.5 star 1 star 1 star 1 star 1 star 4.5 5 19 (19)
Daucus carota

25% off

Daucus carota
£2.69 £2.02
approx 200 seeds
Lathyrus odoratus Matucana

25% off

Lathyrus odoratus 'Matucana'
From £2.54
approx 20 seeds
0.25 star 1 star 1 star 1 star 1 star 4.3 5 10 (10)
Orlaya grandiflora

Best Seller

25% off

Orlaya grandiflora
From £2.17
approx 25 seeds
0.25 star 1 star 1 star 1 star 1 star 4.2 5 10 (10)
Panicum capillare Sparkling Fountain

25% off

Panicum capillare 'Sparkling Fountain'
£4.99 £3.74
approx 100 seeds
Papaver rhoeas Amazing Grey

25% off

Papaver rhoeas 'Amazing Grey'
From £2.17
approx 250 seeds
0.5 star 1 star 1 star 1 star 1 star 4.5 5 2 (2)
Poppy field collection of annuals

Best Seller

25% off

Poppy field collection of annuals
£4.99 £3.74
1g packet | seeds
Verbena rigida Santos

25% off

Verbena rigida 'Santos'
From £2.24
approx 40 seeds
9cm pot
3 × 9cm pots
0 star 0 star 1 star 1 star 1 star 3.0 5 2 (2)
Cosmos bipinnatus Rubenza

25% off

Cosmos bipinnatus 'Rubenza'
£2.49 £1.87
approx 30 seeds
1 star 1 star 1 star 1 star 1 star (3)
Elegant cutting garden collection

25% off

Elegant cutting garden collection
£13.16 £9.87
1 × collection
Pastels cutting garden collection

25% off

Pastels cutting garden collection
£28.62 £21.46
1 × collection
Amaranthus caudatus

25% off

Amaranthus caudatus
£2.79 £2.09
approx 2200 seeds
1 star 1 star 1 star 1 star 1 star (2)
Bupleurum rotundifolium Griffithii

25% off

Bupleurum rotundifolium 'Griffithii'
£2.99 £2.24
approx 125 seeds
Centaurea nigra

25% off

Centaurea nigra
From £2.24
approx 20 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star (5)
Cleome hassleriana Violet Queen

25% off

Cleome hassleriana 'Violet Queen'
£3.79 £2.84
approx 125 seeds
0 star 1 star 1 star 1 star 1 star (1)
Cottage garden collection

25% off

Cottage garden collection
£7.99 £5.99
2g packet | seeds
Gaillardia × grandiflora Burgunder

25% off

Gaillardia × grandiflora 'Burgunder'
From £2.24
approx 20 seeds
9cm pot
3 × 9cm pots
1 star 1 star 1 star 1 star 1 star (1)
Galium verum

25% off

Galium verum
From £2.24
approx 250 seeds
1 star 1 star 1 star 1 star 1 star (1)
Helichrysum Eternity Mix

25% off

Helichrysum 'Eternity Mix'
£2.49 £1.87
approx 350 seeds
Lathyrus odoratus Cupani

25% off

Lathyrus odoratus 'Cupani'
From £2.84
approx 20 seeds
0 star 1 star 1 star 1 star 1 star (1)
Lathyrus odoratus Leamington

25% off

Lathyrus odoratus 'Leamington'
From £2.47
approx 20 seeds
Lathyrus odoratus Mollie Rilstone

25% off

Lathyrus odoratus 'Mollie Rilstone'
From £2.47
approx 20 seeds
Lathyrus odoratus Painted Lady

25% off

Lathyrus odoratus 'Painted Lady'
From £2.62
approx 20 seeds
0 star 0 star 1 star 1 star 1 star (1)
Lathyrus odoratus Winston Churchill

25% off

Lathyrus odoratus 'Winston Churchill'
From £2.62
approx 20 seeds
Nicotiana sylvestris

25% off

Nicotiana sylvestris
£2.79 £2.09
approx 450 seeds
0.5 star 1 star 1 star 1 star 1 star (5)
Nigella damascena Oxford Blue

25% off

Nigella damascena 'Oxford Blue'
£2.79 £2.09
approx 500 seeds
Nigella papillosa African Bride

25% off

Nigella papillosa 'African Bride'
From £2.17
approx 100 seeds
3 × packets of approx 100 seeds
Nigella papillosa Midnight

25% off

Nigella papillosa 'Midnight'
£2.99 £2.24
approx 500 seeds
Rudbeckia hirta Cherry Brandy

New

25% off

Rudbeckia hirta 'Cherry Brandy'
£3.49 £2.62
approx 25 seeds
Rudbeckia hirta Marmalade

New

25% off

Rudbeckia hirta 'Marmalade'
£2.99 £2.24
approx 450 seeds
Silene coronaria

25% off

Silene coronaria
From £1.87
approx 50 seeds
0 star 0.75 star 1 star 1 star 1 star (3)
Limonium sinuatum QIS Apricot

25% off

statice 'Apricot'
£4.79 £3.59
approx 100 seeds
Limonium sinuatum QIS White

25% off

statice 'White'
£3.49 £2.62
approx 100 seeds
Summer glory collection

25% off

Summer glory collection
£7.99 £5.99
2g packet | seeds
1 star 1 star 1 star 1 star 1 star (2)
Visnaga daucoides Green Mist

25% off

Visnaga daucoides 'Green Mist'
£3.29 £2.47
approx 200 seeds
1 star 1 star 1 star 1 star 1 star (2)
Bright and bold sweet pea collection

25% off

Bright & bold sweet pea collection
£9.97 £7.48
1 × collection
Linaria maroccana Licilia collection

25% off

Linaria maroccana 'Licilia collection'
£5.98 £4.48
2 packets of seeds
Ruffling skies cutting garden collection

25% off

Ruffling skies cutting garden collection
£15.05 £11.29
1 × collection
Summer pudding cutting garden collection

25% off

Summer pudding cutting garden collection
£28.53 £21.40
1 × collection
Linaria purpurea Canon Went

25% off

Linaria purpurea 'Canon Went'
From £2.24
9cm pot
3 × 9cm pots
6 × 9cm pots
0.5 star 1 star 1 star 1 star 1 star (2)
Achillea millefolium

Best Seller

25% off

Achillea millefolium
From £2.24
approx 400 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star (2)
Consolida regalis Fancy Purple Picotee

25% off

Consolida regalis 'Fancy Purple Picotee'
£3.79 £2.84
approx 150 seeds
Consolida regalis QIS Dark Blue

25% off

Consolida regalis 'QIS Dark Blue'
£2.99 £2.24
approx 200 seeds
Consolida regalis QIS Rose

25% off

Consolida regalis 'QIS Rose'
£2.99 £2.24
approx 200 seeds
Lathyrus odoratus High Scent

25% off

Lathyrus odoratus 'High Scent'
£4.79 £3.59
approx 20 seeds
Blue and white cutting garden collection

25% off

Blue & white cutting garden collection
£11.36 £8.52
1 × collection
Cherry creme brûlée cutting garden collection

25% off

Cherry créme brûlée cutting garden collection
£25.33 £19.00
1 × collection
Simple white cutting garden collection

25% off

Simple white cutting garden collection
£5.88 £4.41
1 × collection
Sugared almonds cutting garden collection

25% off

Sugared almonds cutting garden collection
£28.62 £22.19
1 × collection
Summer nights cutting garden collection

25% off

Summer nights cutting garden collection
£28.43 £21.32
1 × collection
Lythrum salicaria

25% off

Lythrum salicaria
From £18.74
1 litre aquatic pot
3 × 9cm pots
3 × 1 litre aquatic pots
1 star 1 star 1 star 1 star 1 star (1)
Lepidium sativum

25% off

Lepidium sativum
£2.99 £2.24
approx 4500 seeds
Nepeta cataria

25% off

catnip
From £2.24
approx 150 seeds
0.5 star 1 star 1 star 1 star 1 star (2)
Heritage sweet pea seed gift box

25% off

Heritage sweet pea seed gift box
£22.99 £17.24
gift set
Seedballs poppies seedbombs

25% off

Crocus collection
Seedballs poppies
From £5.24
20 seedballs in gift tube
100 seedballs in gift pouch
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
Seedballs wildlife collection

25% off

Seedballs wildlife collection
£16.99 £12.74
set of 6
Ligusticopsis wallichiana

New

Ligusticopsis wallichiana
From £2.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (9)
Lathyrus odoratus Charlie's Angel
Lathyrus odoratus 'Charlie's Angel'
From £2.62
available to order from autumn
0.25 star 1 star 1 star 1 star 1 star (5)
Dark and rich sweet pea collection
Dark & rich sweet pea collection
£9.37 £7.03
available to order from autumn
Lavish and lush sweet pea collection
Lavish & lush sweet pea collection
£9.37 £7.03
available to order from autumn
Strongly-scented sweet pea collection
Strongly-scented sweet pea collection
£9.27 £6.80
available to order from autumn
Echinacea purpurea Magnus Superior

New

Echinacea purpurea 'Magnus Superior'
£3.49 £2.62
available to order from autumn
Rudbeckia triloba Prairie Glow

New

Rudbeckia triloba 'Prairie Glow'
£3.99 £2.99
available to order from autumn
Award-winning sweet pea collection
Award-winning sweet pea collection
£10.27 £7.48
available to order from autumn
Echium pininana
Echium pininana
From £3.37
available to order from autumn
Sweet pea collection highly scented
Award-winning sweet pea collection highly scented
£11.17 £8.38
available to order from autumn
1 star 1 star 1 star 1 star 1 star (1)
Geranium Maderense

New

Geranium Maderense
From £2.62
available to order from autumn

September flowering seeds make it easier to choose seeds that fit the way you want to garden. Starting from seed gives you more choice, good value and the satisfaction of watching plants grow from the very beginning. Whether you are filling a few pots, planning a border, refreshing a patch of lawn or growing food for the table, the right seed choice helps you get moving with confidence.

At Crocus, the seed range is carefully selected to support everyday gardeners as well as those with a clear plan in mind. You can explore flower seeds, vegetable seeds, herbs, wildflower mixes, lawn seed and practical growing kits, with product details that help you compare timing, space, colour and conditions before you buy.

September flowering seeds are useful for planning colour at the right point in the season. Add them to borders, pots or cutting patches to help keep your garden looking planned rather than accidental.

Order online and have your seeds delivered to your door, ready for your next sowing session. With Crocus expertise behind the range, you can choose popular varieties, plan useful combinations and build a garden that feels more productive, more colourful and easier to manage.

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© Crocus.co.uk Ltd 2026. All rights reserved.