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Plants that Flower in September

The heat may be starting to fade, but that does not mean the colour should. Keep it fresh with asters, phlox and late-flowering anemones.

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RHS Chelsea Flower Show plant of year
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Used at RHS Chelsea Flower Show
Kitchen garden planting guidelines
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Showing Flowering month : September clear all
1176 items
Lathyrus odoratus Leamington

25% off

Lathyrus odoratus 'Leamington'
From £2.47
approx 20 seeds
Lathyrus odoratus Midnight

25% off

Lathyrus odoratus 'Midnight'
From £2.47
approx 20 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 2 (2)
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 3.0 5 1 (1)
Lathyrus odoratus Top Hat

25% off

Lathyrus odoratus 'Top Hat'
From £2.24
approx 20 seeds
Lathyrus odoratus Winston Churchill

25% off

Lathyrus odoratus 'Winston Churchill'
From £2.62
approx 20 seeds
Lathyrus × hammettii Erewhon

25% off

Lathyrus × hammettii 'Erewhon'
From £2.62
approx 20 seeds
Linaria maroccana Licilia Red (Licilia Series)

25% off

Linaria maroccana 'Licilia Red' (Licilia Series)
£2.99 £2.24
approx 500 seeds
Linaria maroccana Licilia Violet (Licilia Series)

25% off

Linaria maroccana 'Licilia Violet' (Licilia Series)
£2.99 £2.24
approx 500 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Malva moschata

25% off

Malva moschata
£2.99 £2.24
approx 50 seeds
Monarda didyma

New

25% off

Monarda didyma
£3.29 £2.47
approx 90 seeds
Tropaeolum Baby Rose

25% off

nasturtium - Tropaeolum 'Baby Rose'
£2.99 £2.24
approx 30 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Tropaeolum majus Alaska Series

25% off

nasturtium - Tropaeolum majus 'Alaska Series'
£2.49 £1.87
approx 40 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 3 (3)
Tropaeolum majus Cherry Rose Jewel

25% off

nasturtium - Tropaeolum majus 'Cherry Rose Jewel'
£3.99 £2.99
approx 30 seeds
Tropaeolum majus Empress of India

25% off

nasturtium - Tropaeolum majus 'Empress of India'
£3.39 £2.54
approx 35 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Tropaeolum majus Peach Melba

New

25% off

nasturtium - Tropaeolum majus 'Peach Melba'
£3.29 £2.47
approx 20 seeds
Tropaeolum minus Bloody Mary

25% off

nasturtium - Tropaeolum minus 'Bloody Mary'
£3.89 £2.92
approx 30 seeds
Nicotiana Whisper Mixed F1

25% off

Nicotiana 'Whisper Mixed' F1
From £2.24
approx 70 seeds
0.75 star 1 star 1 star 1 star 1 star 4.8 5 13 (13)
Nicotiana langsdorffii Bronze Queen

25% off

Nicotiana langsdorffii 'Bronze Queen'
£3.29 £2.47
approx 40 seeds
Nicotiana mutabilis

25% off

Nicotiana mutabilis
£2.79 £2.09
approx 100 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 3 (3)
Nigella damascena Miss Jekyll Alba

New

25% off

Nigella damascena 'Miss Jekyll Alba'
£2.40 £1.80
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
Oenothera lindheimeri The Bride

25% off

Oenothera lindheimeri 'The Bride'
£2.79 £2.09
approx 25 seeds
Oenothera versicolor Sunset Boulevard

New

25% off

Oenothera versicolor 'Sunset Boulevard'
£2.99 £2.24
approx 100 seeds
Prunella vulgaris

25% off

Prunella vulgaris
From £2.24
approx 100 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
Rhodochiton atrosanguineus

25% off

Rhodochiton atrosanguineus
£3.99 £2.99
approx 10 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 vulgaris

New

25% off

Silene vulgaris
£2.99 £2.24
approx 200 seeds
Stachys officinalis

25% off

Stachys officinalis
£3.29 £2.47
approx 150 seeds
Tagetes patula Burning Embers

25% off

Tagetes patula 'Burning Embers'
£2.39 £1.79
approx 50 seeds
Tagetes tenuifolia Golden Gem

25% off

Tagetes tenuifolia 'Golden Gem'
£2.99 £2.24
approx 225 seeds
Thunbergia alata Susie Orange with Black Eye (Susie Series)

25% off

Thunbergia alata 'Susie Orange with Black Eye' (Susie Series)
£2.89 £2.17
approx 30 seeds
0 star 0 star 1 star 1 star 1 star (2)
Thymus serpyllum

New

25% off

Thymus serpyllum
£2.99 £2.24
approx 200 seeds
Trifolium repens

25% off

Trifolium repens
£2.79 £2.09
approx 750 seeds
Verbascum Southern Charm

New

25% off

Verbascum 'Southern Charm'
£4.99 £3.74
approx 10 seeds
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
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)
Antirrhinum majus Admiral Crimson

25% off

Antirrhinum majus 'Admiral Crimson'
£4.49 £3.37
approx 50 seeds
Aster Duchess Mixed

25% off

Aster 'Duchess Mixed'
£2.49 £1.87
approx 200 seeds
Bellis perennis

New

25% off

Bellis perennis - common daisy
£3.99 £2.99
approx 750 seeds
Chrysanthemum Eastern Star

New

25% off

Chrysanthemum 'Eastern Star'
£2.79 £2.09
approx 500 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 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 annuus Desire Red
Helianthus annuus 'Desire Red'
£3.99
approx 10 seeds
Helianthus debilis Soluna Bronze

25% off

Helianthus debilis 'Soluna Bronze'
£3.49 £2.62
approx 30 seeds
Lathyrus odoratus High Scent

25% off

Lathyrus odoratus 'High Scent'
£4.79 £3.59
approx 20 seeds
Lathyrus odoratus Princess Elizabeth
Lathyrus odoratus 'Princess Elizabeth'
From £2.99
approx 20 seeds
Lathyrus odoratus Spencer Waved Mixed

25% off

Lathyrus odoratus 'Spencer Waved Mixed'
From £2.99
approx 35 seeds
Lathyrus odoratus var. nanellus Pink Cupid

25% off

Lathyrus odoratus var. nanellus 'Pink Cupid'
From £2.02
approx 20 seeds
Limnanthes douglasii

25% off

Limnanthes douglasii
£2.49 £1.87
approx 125 seeds
1 star 1 star 1 star 1 star 1 star (1)
Matthiola incana Anytime Red (Anytime Series)

25% off

Matthiola incana 'Anytime Red' (Anytime Series)
£3.49 £2.62
approx 100 seeds
Matthiola incana Rainbow Mixture
Matthiola incana 'Rainbow Mixture'
£4.49
approx 100 seeds
Tagetes patula Strawberry Blonde

New

25% off

Tagetes patula 'Strawberry Blonde'
From £2.84
approx 50 seeds
Verbena bonariensis Vanity
Verbena bonariensis 'Vanity'
£3.99
approx 40 seeds
Blue and white cutting garden collection

25% off

Blue & white cutting garden collection
£11.36 £8.52
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
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)
Hosta Time in a Bottle (PBR)

New

Hosta 'Time in a Bottle' (PBR)
£14.99
9cm pot
grape Chardonnay
grape 'Chardonnay'
£24.99
2 litre pot | 60cm cane
bean (climbing French) Sunshine

25% off

bean (climbing French) 'Sunshine'
£3.49 £2.62
approx 50 seeds
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
chilli Basket of Fire F1

25% off

chilli 'Basket of Fire' F1
£3.99 £2.99
approx 10 seeds
chilli Carolina Reaper

25% off

chilli 'Carolina Reaper'
£3.99 £2.99
approx 5 seeds
courgette Gold Rush

25% off

courgette 'Gold Rush' F1
£2.99 £2.24
approx 10 seeds
Tropaeolum majus Blue Pepe

25% off

nasturtium 'Blue Pepe'
£2.89 £2.17
approx 20 seeds
grape Muscat Bleu
grape 'Muscat Bleu'
£24.99
2 litre pot | 60cm cane
1 star 1 star 1 star 1 star 1 star (1)
Heritage sweet pea seed gift box

25% off

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

25% off

Seedballs artists meadow
From £5.99
20 seedballs in gift tin
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
0 star 0 star 0 star 0 star 1 star (1)
Seedballs bee matchboxes seedbombs

25% off

Seedballs bee matchboxes
£12.99 £9.74
set of 3 matchboxes
Seedballs blue meadow seedbombs

25% off

Seedballs blue meadow
From £5.99
20 seedballs in gift tin
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
Seedballs cornflower seedbombs

25% off

Seedballs cornflower
From £5.24
20 seedballs in gift tube
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
0 star 1 star 1 star 1 star 1 star (1)
Seedballs for bees seedbombs

25% off

Seedballs for bees
From £5.99
20 seedballs in gift tin
100 seedballs in gift pouch
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
Seedballs for butterflies seedbombs

25% off

Seedballs for butterflies
From £5.99
20 seedballs in gift tin
100 seedballs in gift pouch
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
Seedballs make your own native flowers seedbombs kit

25% off

Seedballs make your own native flowers seedbombs kit
£12.99 £9.74
makes 50 - 60 seedballs
Seedballs native annual wildflowers seedbombs

25% off

Seedballs native annual wildflowers
From £11.99
100 seedballs in gift pouch
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
Seedballs native wildflowers for a garden meadow - seedbombs (URBAN)

25% off

Seedballs native wildflowers for a garden meadow
From £5.99
20 seedballs in gift tin
100 seedballs in gift pouch
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
1 star 1 star 1 star 1 star 1 star (1)
Seedballs native wildflowers for shade -seedbombs

25% off

Seedballs native wildflowers for shade
From £11.99
100 seedballs in gift pouch
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
Seedballs native wildflowers for wildlife - seedbombs

25% off

Seedballs native wildflowers for wildlife
From £11.99
100 seedballs in gift pouch
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
Seedballs ox-eye daisy seedbombs

25% off

Seedballs ox-eye daisy
From £5.24
20 seedballs in gift tube
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
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 red campion seedbombs

25% off

Seedballs red campion
From £5.24
20 seedballs in gift tube
250 seedballs gardener's bulk box
Seedballs wild rocket salad seedbombs

25% off

Seedballs wild rocket salad
£6.99 £5.24
20 seedballs in gift tube
Seedballs wildlife collection

25% off

Seedballs wildlife collection
£16.99 £12.74
set of 6
Evening sky pollinator mini-border collection
Evening sky pollinator mini-border collection
From £57.99
available to order from summer
Campanula poscharskyana
Campanula poscharskyana
From £8.99
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (3)
Campanula lactiflora Loddon Anna
Campanula lactiflora 'Loddon Anna'
From £8.99
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (8)
Nepeta Cat's Pajamas
Nepeta 'Cat's Pajamas'
From £9.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (2)
Nepeta grandiflora Summer Magic (PBR)
Nepeta grandiflora 'Summer Magic' (PBR)
From £8.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Phlox paniculata Blue Paradise
Phlox paniculata 'Blue Paradise'
From £9.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (12)
Penstemon Elmley

New

Penstemon 'Elmley'
From £8.99
available to order from spring 2027
Penstemon Pensham Bilberry Ice (Pensham Series)

New

Penstemon 'Pensham Bilberry Ice' (Pensham Series)
From £8.99
available to order from spring 2027
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