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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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RHS Chelsea Flower Show plant of year
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Used at RHS Chelsea Flower Show
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All items
Showing Flowering month : September clear all
512 items
Dahlia Rip City

20% off

Dahlia 'Rip City'
From £4.63
3 litre pot
2 + 1 FREE 3 litre pots
0.75 star 1 star 1 star 1 star 1 star 4.7 5 7 (7)
Dahlia Soulman

20% off

Dahlia 'Soulman'
From £4.79
3 litre pot
2 + 1 FREE 3 litre pots
0.75 star 1 star 1 star 1 star 1 star 4.7 5 3 (3)
Dahlia Spartacus' Senior

20% off

Dahlia 'Spartacus' Senior'
From £4.79
3 litre pot
2 + 1 FREE 3 litre pots
0 star 1 star 1 star 1 star 1 star 4.0 5 2 (2)
Dahlia Thomas A. Edison

20% off

Dahlia 'Thomas A. Edison'
From £4.63
3 litre pot
2 + 1 FREE 3 litre pots
0.75 star 1 star 1 star 1 star 1 star 4.8 5 5 (5)
Dahlia Totally Tangerine

20% off

Dahlia 'Totally Tangerine'
From £4.31
3 litre pot
2 + 1 FREE 3 litre pots
1 star 1 star 1 star 1 star 1 star 4.9 5 10 (10)
Dahlia Verrones Obsidian

20% off

Dahlia 'Verrone's Obsidian'
From £4.31
3 litre pot
2 + 1 FREE 3 litre pots
0.75 star 1 star 1 star 1 star 1 star 4.8 5 4 (4)
Dahlia Waltzing Mathilda

20% off

Dahlia 'Waltzing Mathilda'
From £4.63
3 litre pot
2 + 1 FREE 3 litre pots
0 star 1 star 1 star 1 star 1 star 4.0 5 2 (2)
Dahlia Pretty Woman ('Vdtg43') (PBR) (Dark Angel Series)

20% off

Dahlia Pretty Woman ('Vdtg43') (PBR) (Dark Angel Series)
From £4.79
3 litre pot
2 + 1 FREE 3 litre pots
0 star 0.75 star 1 star 1 star 1 star 3.7 5 6 (6)
Dahlia merckii

New

20% off

Dahlia merckii
From £4.79
approx 10 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 2 (2)
Panicum virgatum Shenandoah

20% off

Panicum virgatum 'Shenandoah'
From £7.99
9cm pot
2 litre pot
3 × 9cm pots
3 × 2 litre pots
0.5 star 1 star 1 star 1 star 1 star 4.4 5 9 (9)
Pennisetum alopecuroides Hameln

20% off

Pennisetum alopecuroides 'Hameln'
From £7.99
9cm pot
2 litre pot
3 × 9cm pots
3 × 2 litre pots
0 star 1 star 1 star 1 star 1 star 4.0 5 1 (1)
Pennisetum Fairy Tails

20% off

Pennisetum 'Fairy Tails'
From £7.99
9cm pot
3 × 9cm pots
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Pennisetum alopecuroides Little Bunny

20% off

Pennisetum alopecuroides 'Little Bunny'
From £7.99
9cm pot
2 litre pot
3 × 9cm pots
3 × 2 litre pots
Pennisetum alopecuroides Red Head

20% off

Pennisetum alopecuroides 'Red Head'
From £15.99
2 litre pot
3 × 2 litre pots
0 star 1 star 1 star 1 star 1 star 4.0 5 1 (1)
Pennisetum villosum

20% off

Pennisetum villosum
From £7.99
9cm pot
3 × 9cm pots
0 star 1 star 1 star 1 star 1 star 4.0 5 11 (11)
Pennisetum alopecuroides Hameln Gold (PBR)

20% off

Pennisetum alopecuroides 'Hameln Gold' (PBR)
From £7.99
9cm pot
3 × 9cm pots
0 star 1 star 1 star 1 star 1 star 4.0 5 1 (1)
Pennisetum macrourum

New

20% off

Pennisetum macrourum
£12.99 £10.39
9cm pot
Rosa Cutie Pie ('ROP007') (PBR)

20% off

Rosa Cutie Pie ('ROP007') (PBR) | Shrub Rose
£34.75 £27.80
2 litre pot
Rosa Félicité et Perpétue

20% off

Rosa Félicité et Perpétue | Rambler Rose
£37.99 £30.39
4 litre pot
Rosa Pink Eureka ('Meiagadou') (PBR)

New

20% off

Rosa Pink Eureka ('Meiagadou') (PBR) | Hybrid Tea Rose
£32.99 £26.39
4 litre pot
Dianthus Pink Kisses ('Kledg12163') (PBR)

Best Seller

20% off

Dianthus Pink Kisses ('Kledg12163') (PBR)
From £6.39
9cm pot
2 + 1 FREE 9cm pots
1 star 1 star 1 star 1 star 1 star (6)
Calibrachoa Caliloco Dracula

New

Up to 40% off

Calibrachoa 'Caliloco Dracula'
From £6.39
9cm pot
5 × rooted cuttings
2 + 1 FREE 9cm pots
0 star 0 star 1 star 1 star 1 star (1)
Dianthus Diantica Purple Wedding ('Kledg18274') (PBR)

20% off

Dianthus Diantica Purple Wedding ('Kledg18274') (PBR)
From £6.39
9cm pot
2 + 1 FREE 9cm pots
1 star 1 star 1 star 1 star 1 star (2)
Nemesia Lady Penelope

New

50% off

Nemesia 'Lady Penelope'
£12.99 £6.50
5 × rooted cuttings
0.5 star 1 star 1 star 1 star 1 star (2)
Verbena Showboat Dark Red (Showboat Series)

50% off

Verbena 'Showboat Dark Red' (Showboat Series)
£10.99 £5.50
5 × rooted cuttings
1 star 1 star 1 star 1 star 1 star (2)
Lathyrus odoratus Matucana

20% off

Lathyrus odoratus 'Matucana'
From £2.71
approx 20 seeds
0.25 star 1 star 1 star 1 star 1 star (10)
Lathyrus odoratus Old Fashioned mixed

New

20% off

sweet pea 'Old Fashioned mixed'
£2.99 £2.39
approx 30 seeds
Cosmos bipinnatus Dazzler

20% off

Cosmos bipinnatus 'Dazzler'
£2.25 £1.80
approx 100 seeds
0.25 star 1 star 1 star 1 star 1 star (3)
Lathyrus odoratus Noel Sutton

20% off

Lathyrus odoratus 'Noel Sutton'
From £2.39
approx 20 seeds
Malope trifida Vulcan

20% off

Malope trifida 'Vulcan'
£2.25 £1.80
approx 70 seeds
Matthiola incana Column Apricot

20% off

Matthiola incana 'Column Apricot'
£4.49 £3.59
approx 100 seeds
Tropaeolum majus Black Velvet (Tom Thumb Series)

20% off

nasturtium - Tropaeolum majus 'Black Velvet' (Tom Thumb Series)
£2.69 £2.15
approx 30 seeds
1 star 1 star 1 star 1 star 1 star (5)
Amaranthus caudatus

20% off

Amaranthus caudatus
£2.79 £2.23
approx 2200 seeds
1 star 1 star 1 star 1 star 1 star (2)
Callistephus chinensis King Size Apricot

20% off

Callistephus chinensis 'King Size Apricot'
£2.79 £2.23
approx 50 seeds
Cosmos bipinnatus Candy Stripe

20% off

Cosmos bipinnatus 'Candy Stripe'
£2.99 £2.39
approx 100 seeds
1 star 1 star 1 star 1 star 1 star (1)
Lathyrus Prince of Orange

New

20% off

Lathyrus 'Prince of Orange'
£3.99 £3.19
approx 20 seeds
Lathyrus odoratus Blue Velvet

New

20% off

Lathyrus odoratus 'Blue Velvet'
From £2.71
approx 20 seeds
Lathyrus odoratus Cupani

20% off

Lathyrus odoratus 'Cupani'
From £3.03
approx 20 seeds
0 star 1 star 1 star 1 star 1 star (1)
Lathyrus odoratus Gwendoline

20% off

Lathyrus odoratus 'Gwendoline'
£2.89 £2.31
approx 20 seeds
1 star 1 star 1 star 1 star 1 star (6)
Lathyrus odoratus Jilly

20% off

Lathyrus odoratus 'Jilly'
£2.99 £2.39
approx 20 seeds
Lathyrus odoratus Leamington

20% off

Lathyrus odoratus 'Leamington'
From £2.63
approx 20 seeds
Lathyrus odoratus Midnight

20% off

Lathyrus odoratus 'Midnight'
From £2.63
approx 20 seeds
1 star 1 star 1 star 1 star 1 star (2)
Lathyrus odoratus Mollie Rilstone

20% off

Lathyrus odoratus 'Mollie Rilstone'
From £2.63
approx 20 seeds
Lathyrus odoratus Painted Lady

20% off

Lathyrus odoratus 'Painted Lady'
From £2.79
approx 20 seeds
0 star 0 star 1 star 1 star 1 star (1)
Lathyrus odoratus Top Hat

20% off

Lathyrus odoratus 'Top Hat'
From £2.39
approx 20 seeds
Lathyrus odoratus Winston Churchill

20% off

Lathyrus odoratus 'Winston Churchill'
From £2.79
approx 20 seeds
Lathyrus × hammettii Erewhon

20% off

Lathyrus × hammettii 'Erewhon'
From £2.79
approx 20 seeds
Lotus corniculatus

20% off

Lotus corniculatus
£2.99 £2.39
approx 100 seeds
0 star 1 star 1 star 1 star 1 star (2)
Oenothera versicolor Sunset Boulevard

New

20% off

Oenothera versicolor 'Sunset Boulevard'
£2.99 £2.39
approx 100 seeds
Persicaria orientalis Cerise Pearls

20% off

Persicaria orientalis 'Cerise Pearls'
£3.99 £3.19
approx 100 seeds
Phacelia tanacetifolia

20% off

Phacelia tanacetifolia - green manure
£2.89 £2.31
25m² pack
1 star 1 star 1 star 1 star 1 star (3)
Rhodochiton atrosanguineus

20% off

Rhodochiton atrosanguineus
£3.99 £3.19
approx 10 seeds
Rudbeckia hirta Cherry Brandy

New

20% off

Rudbeckia hirta 'Cherry Brandy'
£3.49 £2.79
approx 25 seeds
Rudbeckia hirta Marmalade

New

20% off

Rudbeckia hirta 'Marmalade'
£2.99 £2.39
approx 450 seeds
Rudbeckia triloba Prairie Glow

New

20% off

Rudbeckia triloba 'Prairie Glow'
£3.99 £3.19
approx 25 seeds
Bright and bold sweet pea collection

20% off

Bright & bold sweet pea collection
£9.97 £7.98
1 × collection
Summer pudding cutting garden collection

20% off

Summer pudding cutting garden collection
£28.53 £22.82
1 × collection
Cosmos bipinnatus Xsenia

20% off

Cosmos bipinnatus 'Xsenia'
From £3.03
9cm pot
2 + 1 FREE 9cm pots
0 star 0 star 1 star 1 star 1 star (2)
Aster Duchess Mixed

20% off

Aster 'Duchess Mixed'
£2.49 £1.99
approx 200 seeds
Cosmos bipinnatus Velouette

40% off

Cosmos bipinnatus 'Velouette'
£3.99 £2.39
approx 30 seeds
Lathyrus odoratus Princess Elizabeth

Up to 40% off

Lathyrus odoratus 'Princess Elizabeth'
From £1.79
approx 20 seeds
Lathyrus odoratus Spencer Waved Mixed

20% off

Lathyrus odoratus 'Spencer Waved Mixed'
From £3.19
approx 35 seeds
Lathyrus odoratus var. nanellus Pink Cupid

20% off

Lathyrus odoratus var. nanellus 'Pink Cupid'
From £2.15
approx 20 seeds
Matthiola incana Rainbow Mixture

40% off

Matthiola incana 'Rainbow Mixture'
£4.49 £2.69
approx 100 seeds
Summer nights cutting garden collection

20% off

Summer nights cutting garden collection
£28.43 £22.74
1 × collection
Assorted native oxygenating
Assorted native oxygenating bunches
From £22.99
5 × bunches
10 + 5 FREE
Wildlife pond plant collection
Wildlife pond plant collection
From £44.99
3 × 1 litre aquatic pots
6 × 9cm pots
6 × 1 litre aquatic pots
4 × 3 litre aquatic pots
+ 1 more available
Nymphaea Burgundy Princess

20% off

Nymphaea 'Burgundy Princess'
£38.99 £31.19
1 litre aquatic pot
Nymphaea Doll House

20% off

Nymphaea 'Doll House'
£38.99 £31.19
1 litre aquatic pot
Nymphaea Aurora
Nymphaea 'Aurora'
£52.99
2 litre aquatic pot
Nymphaea Lemon Mist
Nymphaea 'Lemon Mist'
£52.99
3 litre aquatic pot
Nymphaea Mrs Richmond
Nymphaea 'Mrs Richmond'
£52.99
3 litre aquatic pot
Ornamental colour pond plant collection
Ornamental colour pond plant collection
From £44.99
3 × 1 litre aquatic pots
6 × 9cm pots
4 × 3 litre aquatic pots
Persicaria amphibia
Persicaria amphibia
From £32.99
3 × 9cm pots
Stachys palustris
Stachys palustris
From £24.99
1 litre aquatic pot
3 × 9cm pots
3 × 1 litre aquatic pots
Phalaenopsis Boquetto Beauty

20% off

Phalaenopsis Boquetto Beauty | Orchid
From £34.39
12cm pot | 45cm tall
with brass pot
Phalaenopsis Formidablo Niagra Falls

20% off

Phalaenopsis Formidablo Niagra Falls | Orchid
From £55.99
12cm pot | 60cm tall
with green pot
Phalaenopsis Exclusivo Violet Queen

Up to 20% off

Phalaenopsis Violet Queen | Orchid
From £29.59
12cm pot | 45cm tall
with silver pot
with terracotta pot
with brass pot
grape Chardonnay

20% off

grape 'Chardonnay'
£24.99 £19.99
2 litre pot | 60cm cane
bean (climbing French) Sunshine

40% off

bean (climbing French) 'Sunshine'
£3.49 £2.09
approx 50 seeds
1 star 1 star 1 star 1 star 1 star (1)
grape Muscat Bleu

20% off

grape 'Muscat Bleu'
£24.99 £19.99
2 litre pot | 60cm cane
1 star 1 star 1 star 1 star 1 star (1)
Seedballs blue meadow seedbombs

20% off

Seedballs blue meadow
From £6.39
20 seedballs in gift tin
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
Seedballs for bees seedbombs

20% off

Seedballs for bees
From £6.39
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

20% off

Seedballs for butterflies
From £6.39
20 seedballs in gift tin
100 seedballs in gift pouch
250 seedballs gardener's bulk box
500 seedballs gardener's bulk box
Streptocarpus Polka-Dot Purple
Streptocarpus 'Polka-Dot Purple' & ceramic pot cover
From £18.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
12cm pot | with 13cm white pot
Salvia Tropicolour Carmine ('Troprd24') (Tropicolour Series)

New

Salvia Tropicolour Carmine ('Troprd24') (PBR) (Tropicolour Series)
From £9.59
available to order from summer
Salvia Tropicolour Claret ('Tropdwn24') (Tropicolour Series)

New

Salvia Tropicolour Claret ('Tropdwn24') (PBR) (Tropicolour Series)
From £9.59
available to order from summer
Penstemon Alice Hindley

New

Penstemon 'Alice Hindley'
From £7.19
available to order from summer
Penstemon Elmley

New

Penstemon 'Elmley'
From £7.19
available to order from summer
Penstemon Midnight

New

Penstemon 'Midnight'
From £7.19
available to order from summer
Penstemon Pensham Bilberry Ice (Pensham Series)

New

Penstemon 'Pensham Bilberry Ice' (Pensham Series)
From £7.19
available to order from summer
Penstemon Pensham Wedding Day (Pensham Series)

New

Penstemon 'Pensham Wedding Day (Pensham Series)
From £7.19
available to order from summer
Penstemon Summertime Pink

New

Penstemon 'Summertime Pink'
From £7.19
available to order from summer
Penstemon heterophyllus Heavenly Blue

New

Penstemon heterophyllus 'Heavenly Blue'
From £7.19
available to order from summer
award winning Penstemon collection

New

Award-winning Penstemon collection
From £21.58
available to order from summer
Heavenly Penstemon collection

New

Heavenly Penstemon collection
From £21.58
available to order from summer
Lythrum and Campanula plant combination
Lythrum & Campanula plant combination
£53.94 £43.15
available to order from summer
Pensham Penstemon collection

New

Pensham Penstemon collection
From £21.58
available to order from summer
Tom's Chelsea Woodland Sanctuary collection 'Lush shade'
Tom's Chelsea 'Woodland Sanctuary collection 'Lush shade''
From £30.77
available to order from summer
Tom's Chelsea Woodland Sanctuary collection 'Texture & form'
Tom's Chelsea 'Woodland Sanctuary collection 'Texture & form''
From £32.77
available to order from summer
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