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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.

By type
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Used at RHS Chelsea Flower Show
Kitchen garden planting guidelines
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All items
Showing Flowering month : September clear all
368 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
Malva moschata

25% off

Malva moschata
£2.99 £2.24
approx 50 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 sylvestris

25% off

Nicotiana sylvestris
£2.79 £2.09
approx 450 seeds
0.5 star 1 star 1 star 1 star 1 star 4.6 5 5 (5)
Nigella Persian Jewels

New

25% off

Nigella 'Persian Jewels'
£2.99 £2.24
approx 500 seeds
Nigella papillosa Delft Blue

25% off

Nigella papillosa 'Delft Blue'
From £2.09
approx 500 seeds
Oenothera lindheimeri The Bride

25% off

Oenothera lindheimeri 'The Bride'
£2.79 £2.09
approx 25 seeds
Persicaria orientalis Cerise Pearls

25% off

Persicaria orientalis 'Cerise Pearls'
£3.99 £2.99
approx 100 seeds
Phlox drummondii Cherry Caramel

25% off

Phlox drummondii 'Cherry Caramel'
£3.49 £2.62
approx 200 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Phlox drummondii Crème Brûlée

25% off

Phlox drummondii 'Crème Brûlée'
£2.49 £1.87
approx 200 seeds
1 star 1 star 1 star 1 star 1 star (1)
Phlox drummondii Sugar Stars

25% off

Phlox drummondii 'Sugar Stars'
£3.49 £2.62
approx 300 seeds
Salvia viridis

New

25% off

Salvia viridis
£2.99 £2.24
approx 300 seeds
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
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)
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
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
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
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
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
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
Nepeta cataria

25% off

catnip
From £2.24
approx 150 seeds
0.5 star 1 star 1 star 1 star 1 star (2)
Salvia elegans
sage - pineapple
From £7.99
9cm pot
2 + 1 FREE 9cm pots
Hosta Time in a Bottle (PBR)

New

Hosta 'Time in a Bottle' (PBR)
£14.99
9cm pot
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)
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
Dahlia Tartan
Dahlia 'Tartan'
From £14.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (2)
Nemesia denticulata

New

Nemesia denticulata
From £9.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (1)
Saponaria ocymoides

New

Saponaria ocymoides
From £11.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Clematis Fujimusume
Clematis 'Fujimusume'
£27.99
available to order from spring 2027
Clematis Pangbourne Pink
Clematis 'Pangbourne Pink'
£29.99
available to order from spring 2027
Clematis Bijou ('Evipo030') (PBR) (Tudor Patio Series)
Clematis Bijou ('Evipo030') (PBR) (Tudor Patio Series)
£27.99
available to order from spring 2027
Clematis Edda ('Evipo074') (PBR) (Boulevard Series)
Clematis Edda ('Evipo074') (PBR) (Boulevard Series)
£28.99
available to order from spring 2027
Clematis Issey ('Evipo081') (PBR)
Clematis Issey ('Evipo081') (PBR)
£34.99
available to order from spring 2027
Clematis Pompeii ('Evipo116') (Boulevard Series)
Clematis Pompeii ('Evipo116') (Boulevard Series)
£31.95
available to order from spring 2027
Clematis Sacha ('Evipo060') (PBR)
Clematis Sacha ('Evipo060')
£34.99
available to order from spring 2027
0 star 1 star 1 star 1 star 1 star (1)
Clematis Zara ('Evipo062') (PBR) (Boulevard Series)
Clematis Zara ('Evipo062') (PBR) (Boulevard Series)
£34.99
available to order from spring 2027
Clematis Alionushka
Clematis 'Alionushka'
£28.95
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Clematis Nubia ('Evipo079') (PBR) (Boulevard Series)
Clematis Nubia ('Evipo079') (PBR)
£29.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (2)
Clematis White Arabella ('Zo14089') (PBR)
Clematis White Arabella ('Zo14089') (PBR)
£34.99
available to order from summer
Clematis × aromatica
Clematis × aromatica
£29.95
available to order from summer
0 star 0 star 0 star 1 star 1 star (1)
Hibiscus syriacus Blushing Bride
Hibiscus syriacus 'Blushing Bride'
£29.99
available to order from spring 2027
Hibiscus syriacus French Cabaret® Pastel ('Mindouw4') (PBR)

New

Hibiscus syriacus French Cabaret® Pastel ('Mindouw4') (PBR)
£29.99
available to order from spring 2027
Hibiscus syriacus French Cabaret® Pink ('Mindoup17') (PBR)

New

Hibiscus syriacus French Cabaret® Pink ('Mindoup17') (PBR)
£29.99
available to order from spring 2027
Hibiscus syriacus French Cabaret® White ('Mindoub1') (PBR)

New

Hibiscus syriacus French Cabaret® White ('Mindoub1') (PBR)
£29.99
available to order from spring 2027
Hibiscus syriacus Purple Chiffon ('Rwoods8') (PBR) (Chiffon Series)

New

Hibiscus syriacus Purple Chiffon ('Rwoods8') (PBR) (Chiffon Series)
£29.99
available to order from spring 2027
Lavatera falcata Lilia Twirl (PBR)
Lavatera falcata 'Lilia Twirl' (PBR)
£22.99
available to order from spring 2027
Hibiscus syriacus Oiseau Bleu
Hibiscus syriacus 'Oiseau Bleu'
£29.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (11)
Hydrangea Boléro Blue
Hydrangea 'Boléro Blue'
£24.99 £14.99
available to order from summer
0 star 0 star 0 star 1 star 1 star (2)
Lavandula × intermedia Platinum Blonde ('Momparle') (PBR)
Lavandula × intermedia Platinum Blonde ('Momparler') (PBR)
£17.99
available to order from summer
Hibiscus syriacus Marina
Hibiscus syriacus 'Marina'
£29.99
sold out
Classic Canna collection
Classic canna collection
From £28.95
available to order from winter
Scented begonia collection
Fragrant begonia collection
From £14.95
available to order from winter
Hedychium collection
Hedychium collection
From £26.95
available to order from winter
Tropicanna Cannas
Tropicanna canna collection
From £33.95
available to order from winter
Canna Phasion
Canna 'Phasion'
From £11.99
available to order from winter
0.25 star 1 star 1 star 1 star 1 star (8)
Canna Wyoming
Canna 'Wyoming'
From £6.99
available to order from winter
0.25 star 1 star 1 star 1 star 1 star (4)
Canna indica Tropicanna Gold ('Mactro') (PBR)
Canna indica Tropicanna Gold ('Mactro') (PBR)
From £11.99
available to order from winter
Canna Tropicanna Black ('Lon01') (PBR)
Canna Tropicanna Black ('Lon01') (PBR)
From £9.99
available to order from winter
0.75 star 1 star 1 star 1 star 1 star (8)
Hedychium gardnerianum
Hedychium gardnerianum
From £8.99
available to order from winter
1 star 1 star 1 star 1 star 1 star (1)
Lathyrus odoratus Diamond Jubilee
Lathyrus odoratus 'Diamond Jubilee'
From £7.99
sold out
Cosmos bipinnatus Sonata White ('Pas1789') (Sonata Series)

Best Seller

Cosmos bipinnatus Sonata White ('Pas1789') (Sonata Series)
£9.99
available to order from winter
0 star 1 star 1 star 1 star 1 star (12)
Nicotiana Cuba Rose

New

Nicotiana 'Cuba Rose'
From £7.99
available to order from winter
Verbena Endurascape Dark Purple ('Balendakle')
Verbena Endurascape Dark Purple ('Balendakle')
From £7.99
available to order from winter
Arctotis × hybrida hort. Red Devil
Arctotis × hybrida 'Red Devil'
From £7.99
sold out
Cosmos bipinnatus Antiquity
Cosmos bipinnatus 'Antiquity'
From £10.99
sold out
0 star 0.75 star 1 star 1 star 1 star (8)
Cosmos bipinnatus Sonata Hot Pink Mixed
Cosmos bipinnatus 'Sonata Hot Pink Mixed'
£39.99
sold out
0.75 star 1 star 1 star 1 star 1 star (11)
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