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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
53 items
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)
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)
Cosmos bipinnatus Apricota

25% off

Cosmos bipinnatus 'Apricota'
From £2.62
approx 50 seeds
0 star 0.25 star 1 star 1 star 1 star 3.3 5 3 (3)
Cosmos bipinnatus Double Click Snow Puff (Double Click Series)

25% off

Cosmos bipinnatus 'Double Click Snow Puff' (Double Click Series)
£3.49 £2.62
approx 60 seeds
Cosmos bipinnatus Fizzy Rose Picotee (Fizzy Series)

25% off

Cosmos bipinnatus 'Fizzy Rose Picotee' (Fizzy Series)
From £2.47
approx 100 seeds
9cm pot
2 + 1 FREE 9cm pots
0 star 1 star 1 star 1 star 1 star 4.0 5 1 (1)
Craspedia globosa

New

25% off

Craspedia globosa
£2.99 £2.24
approx 200 seeds
Helianthus annuus ProCut White Lite (ProCut Series)

New

25% off

Helianthus annuus 'ProCut White Lite' (ProCut Series)
£3.49 £2.62
approx 15 seeds
Helianthus annuus Red Sun

New

25% off

Helianthus annuus 'Red Sun'
£3.49 £2.62
approx 25 seeds
Malope trifida Vulcan

25% off

Malope trifida 'Vulcan'
£2.25 £1.69
approx 70 seeds
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 5.0 5 2 (2)
Antirrhinum majus Potomac Lavender

25% off

Antirrhinum majus 'Potomac Lavender'
£5.49 £4.12
approx 50 seeds
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 4.0 5 1 (1)
Cosmos bipinnatus Candy Stripe

25% off

Cosmos bipinnatus 'Candy Stripe'
£2.99 £2.24
approx 100 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Cosmos bipinnatus Double Click Rose Bonbon (Double Click Series)

25% off

Cosmos bipinnatus 'Double Click Rose Bonbon' (Double Click Series)
£4.99 £3.74
approx 75 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Cosmos bipinnatus Fizzy White (Fizzy Series)

25% off

Cosmos bipinnatus 'Fizzy White' (Fizzy Series)
£3.29 £2.47
approx 100 seeds
Helianthus Tall Single

25% off

Helianthus 'Tall Single'
£2.49 £1.87
approx 50 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 2 (2)
Helianthus annuus Taiyo

New

25% off

Helianthus annuus 'Taiyo'
£3.49 £2.62
approx 30 seeds
Helianthus debilis Soluna Lemon

25% off

Helianthus debilis 'Soluna Lemon'
£3.49 £2.62
approx 30 seeds
Knautia arvensis

25% off

Knautia arvensis
£2.99 £2.24
approx 25 seeds
0 star 0 star 0 star 1 star 1 star 2.0 5 2 (2)
Lathyrus Prince of Orange

New

25% off

Lathyrus 'Prince of Orange'
£3.99 £2.99
approx 20 seeds
Malva moschata

25% off

Malva moschata
£2.99 £2.24
approx 50 seeds
Nicotiana mutabilis

25% off

Nicotiana mutabilis
£2.79 £2.09
approx 100 seeds
1 star 1 star 1 star 1 star 1 star (3)
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
Persicaria orientalis Cerise Pearls

25% off

Persicaria orientalis 'Cerise Pearls'
£3.99 £2.99
approx 100 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)
Silene vulgaris

New

25% off

Silene vulgaris
£2.99 £2.24
approx 200 seeds
Verbascum Southern Charm

New

25% off

Verbascum 'Southern Charm'
£4.99 £3.74
approx 10 seeds
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
Cosmos bipinnatus Casanova Pink (Casanova Series)

25% off

Cosmos bipinnatus 'Casanova Pink' (Casanova Series)
£3.29 £2.47
approx 30 seeds
1 star 1 star 1 star 1 star 1 star (1)
Cosmos bipinnatus Double Click Cranberries (Double Click Series)

25% off

Cosmos bipinnatus 'Double Click Cranberries' (Double Click Series)
£5.99 £4.49
approx 60 seeds
Cosmos bipinnatus Velouette
Cosmos bipinnatus 'Velouette'
£3.99
approx 30 seeds
Helianthus debilis Soluna Bronze

25% off

Helianthus debilis 'Soluna Bronze'
£3.49 £2.62
approx 30 seeds
Linaria purpurea

New

25% off

Linaria purpurea
£2.99 £2.24
approx 100 seeds
Linaria purpurea Springside White

New

25% off

Linaria purpurea 'Springside White'
£3.49 £2.62
approx 40 seeds
Matthiola incana Rainbow Mixture
Matthiola incana 'Rainbow Mixture'
£4.49
approx 100 seeds
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)
broccoli raab Cima di Rapa 60

25% off

broccoli raab 'Cima di Rapa 60'
£3.29 £2.47
approx 4800 seeds
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)
Cosmos sulphureus Bright Lights mixed
Cosmos sulphureus 'Bright Lights mixed'
£2.99 £2.24
available to order from autumn
Cosmos bipinnatus Apricot Lemonade

New

Cosmos bipinnatus 'Apricot Lemonade'
From £2.24
available to order from autumn
Cosmos bipinnatus Seashells mixed

New

Cosmos bipinnatus 'Seashells mixed'
£2.99 £2.24
available to order from autumn
Rudbeckia triloba Prairie Glow

New

Rudbeckia triloba 'Prairie Glow'
£3.99 £2.99
available to order from autumn
Aster chinensis Silver Blue

New

Aster chinensis 'Silver Blue'
£4.99 £3.74
available to order from autumn
Centaurea cyanus Classic Fantastic
Centaurea cyanus 'Classic Fantastic'
£2.99 £2.24
available to order from autumn
Echium pininana
Echium pininana
From £3.37
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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