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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
Facing
How much sun
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Evergreen / deciduous
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Attractive to wildlife
Quick growing
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Bedding planting time
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Sowing month outside
Vegetable harvesting month
Vegetable groups
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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
371 items
Alchemilla mollis

Best Seller

20% off

Alchemilla mollis
From £2.39
9cm pot
2 litre pot
3 × 9cm pots
3 × 2 litre pots
0.5 star 1 star 1 star 1 star 1 star 4.6 5 29 (29)
Amaranthus caudatus

20% off

Amaranthus caudatus
£2.79 £2.23
approx 2200 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 2 (2)
Ammi majus

Best Seller

Up to 50% off

Ammi majus
From £2.31
approx 500 seeds
3 × packets of seeds
0.5 star 1 star 1 star 1 star 1 star 4.6 5 5 (5)
Antirrhinum Shiryu Kiss

New

Antirrhinum 'Shiryu Kiss'
£12.99 £10.39
available to order from summer
Antirrhinum Snap in Black Apricote

New

Antirrhinum 'Snap in Black Apricote'
From £6.39
available to order from winter
0 star 0 star 0 star 1 star 1 star 2.0 5 1 (1)
Antirrhinum Snap in Black Pink

New

Antirrhinum 'Snap in Black Pink'
From £6.39
available to order from winter
Antirrhinum Snap in Black Raspberry

New

Antirrhinum 'Snap in Black Raspberry'
From £6.39
available to order from winter
Antirrhinum majus Admiral Crimson

20% off

Antirrhinum majus 'Admiral Crimson'
£4.49 £3.59
approx 50 seeds
Antirrhinum majus Admiral White

20% off

Antirrhinum majus 'Admiral White'
From £3.19
approx 50 seeds
3 × packets of seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Antirrhinum majus Appleblossom

20% off

Antirrhinum majus 'Appleblossom'
From £2.39
approx 20 seeds
3 × packets of seeds
Antirrhinum majus Madame Butterfly Bronze White

20% off

Antirrhinum majus 'Madame Butterfly Bronze White'
£3.49 £2.79
approx 25 seeds
Antirrhinum majus Madame Butterfly Cherry Bronze

20% off

Antirrhinum majus 'Madame Butterfly Cherry Bronze'
£3.49 £2.79
approx 25 seeds
Antirrhinum majus Madame Butterfly Pink
Antirrhinum majus 'Madame Butterfly Pink'
£4.49 £3.59
available to order from summer
Antirrhinum majus Madame Butterfly Red

40% off

Antirrhinum majus 'Madame Butterfly Red'
£3.49 £2.09
approx 25 seeds
Antirrhinum majus Night and Day

40% off

Antirrhinum majus 'Night and Day'
£2.49 £1.49
approx 500 seeds
Antirrhinum majus Potomac Lavender

20% off

Antirrhinum majus 'Potomac Lavender'
£5.49 £4.39
approx 50 seeds
Antirrhinum majus Sonnet Series, formula mixed
Antirrhinum majus Sonnet Series mixed
£39.99 £20.00
sold out
1 star 1 star 1 star 1 star 1 star 5.0 5 16 (16)
Arctotis × hybrida hort. Flame
Arctotis × hybrida 'Flame'
From £6.39
available to order from winter
Arctotis × hybrida hort. Red Devil
Arctotis × hybrida 'Red Devil'
From £6.39
available to order from winter
Arctotis × hybrida hort. Wine
Arctotis × hybrida 'Wine'
From £6.39
available to order from winter
Argyranthemum Santorini Dark Rose

New

20% off

Argyranthemum 'Santorini Dark Rose'
£12.99 £10.39
9cm pot
Aster Duchess Mixed

20% off

Aster 'Duchess Mixed'
£2.49 £1.99
approx 200 seeds
Aster chinensis Silver Blue

New

Aster chinensis 'Silver Blue'
£4.99 £3.99
available to order from summer
Sweet pea collection highly scented
Award-winning sweet pea collection highly scented
£11.17 £8.94
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Chaenostoma Megacopa Blue
bacopa 'Megacopa Blue'
From £6.39
available to order from winter
0.5 star 1 star 1 star 1 star 1 star (2)
Chaenostoma cordatum Snowflake

Up to 40% off

bacopa 'Snowflake'
From £5.99
9cm pot
2 + 1 FREE 9cm pots
1 star 1 star 1 star 1 star 1 star (3)
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)
Begonia Illumination Apricot (Illumination Series)

40% off

Begonia 'Illumination Apricot' (Illumination Series)
£10.99 £6.59
5 × seedlings | jumbo
0 star 1 star 1 star 1 star 1 star (2)
Begonia Nonstop Flame

New

Begonia 'Nonstop Flame'
From £6.39
available to order from winter
Begonia Nonstop Lemon

New

Begonia 'Nonstop Lemon'
From £6.39
available to order from winter
Begonia Nonstop Pink

New

20% off

Begonia 'Nonstop Pink'
From £6.39
1 litre pot
2 + 1 FREE 1 litre pots
Begonia Nonstop Red

New

20% off

Begonia 'Nonstop Red'
From £6.39
1 litre pot
2 + 1 FREE 1 litre pots
Begonia Nonstop White

New

20% off

Begonia 'Nonstop White'
From £6.39
1 litre pot
2 + 1 FREE 1 litre pots
Begonia Sunbrero Bicolour

New

Begonia 'Sunbrero Bicolour'
From £6.39
available to order from winter
Bidens Sunbird White-Yellow

New

Bidens 'Sunbird White-Yellow'
From £6.39
available to order from winter
0.25 star 1 star 1 star 1 star 1 star (3)
Bidens Sunbird Yellow Red Star Improved

New

Bidens 'Sunbird Yellow Red Star Improved'
From £6.39
available to order from winter
Bidens Trailing Orange Eye

New

20% off

Bidens 'Trailing Orange Eye'
£12.99 £10.39
9cm pot
Bidens ferulifolia Bee Happy Red ('Baleehedi') (Bee Happy Series)
Bidens ferulifolia Bee Happy Red ('Baleehedi') (Bee Happy Series)
From £6.39
available to order from winter
Blue and white cutting garden collection

20% off

Blue & white cutting garden collection
£11.36 £9.09
1 × collection
Brachyscome Brasco Violet

New

Brachyscome 'Brasco Violet'
From £6.39
available to order from winter
1 star 1 star 1 star 1 star 1 star (1)
Brachyscome multifida Surdaisy White

20% off

Brachyscome multifida 'Surdaisy White'
From £6.39
9cm pot
2 + 1 FREE 9cm pots
Calendula officinalis Fiesta Orange
Calendula officinalis 'Fiesta Orange'
From £5.59
available to order from winter
Calibrachoa Cabaret Double Magenta

New

Calibrachoa 'Cabaret Double Magenta'
From £6.39
available to order from winter
0.5 star 1 star 1 star 1 star 1 star (2)
Calibrachoa Cabaret Double Sky Blue

New

Up to 50% off

Calibrachoa 'Cabaret Double Sky Blue'
From £6.39
5 × rooted cuttings
0 star 0 star 1 star 1 star 1 star (1)
Calibrachoa Cabaret Double White

New

Up to 40% off

Calibrachoa 'Cabaret Double White'
From £6.39
9cm pot
2 + 1 FREE 9cm pots
0 star 1 star 1 star 1 star 1 star (2)
Calibrachoa Cabaret Early Orange (Cabaret Series)
Calibrachoa 'Cabaret Early Orange' (Cabaret Series)
From £6.39
available to order from winter
0.75 star 1 star 1 star 1 star 1 star (7)
Calibrachoa Cabaret Early Pink (PBR) (Cabaret Series)
Calibrachoa 'Cabaret Early Pink' (Cabaret Series)
£10.99 £6.59
sold out
1 star 1 star 1 star 1 star 1 star (1)
Calibrachoa Caliloco Dracula

New

Up to 40% off

Calibrachoa 'Caliloco Dracula'
From £6.39
9cm pot
2 + 1 FREE 9cm pots
0 star 0 star 1 star 1 star 1 star (1)
Calibrachoa Can-can Black Cherry (Can-can Series)
Calibrachoa 'Can-can Black Cherry' (Can-can Series)
From £6.39
available to order from winter
0 star 0.75 star 1 star 1 star 1 star (3)
Calibrachoa Chameleon Lemon Frose

New

Up to 40% off

Calibrachoa 'Chameleon Lemon Frose'
From £6.39
9cm pot
2 + 1 FREE 9cm pots
0 star 0 star 0.25 star 1 star 1 star (3)
Calibrachoa Cabaret Goodnight Kiss ('Balcabooni') (PBR)
Calibrachoa (Cabaret Series) Cabaret Goodnight Kiss ('Balcabooni') (PBR)
From £6.39
available to order from winter
1 star 1 star 1 star 1 star 1 star (1)
Calibrachoa Cabaret Bright Red ('Balcabrite') (PBR) (Cabaret Series)
Calibrachoa Cabaret Bright Red ('Balcabrite') (PBR) (Cabaret Series)
From £6.39
available to order from winter
0 star 1 star 1 star 1 star 1 star (3)
Calibrachoa Calitastic Cappuccino ('Wescacacap') (Calitastic Series)

Up to 40% off

Calibrachoa Calitastic Cappuccino ('Wescacacap') (Calitastic Series)
From £5.99
9cm pot
2 + 1 FREE 9cm pots
0.25 star 1 star 1 star 1 star 1 star (3)
Calibrachoa Chameleon Blueberry Scone ('Wescachablusc')

Up to 40% off

Calibrachoa Chameleon Blueberry Scone ('Wescachablusc')
From £6.39
9cm pot
2 + 1 FREE 9cm pots
0 star 0 star 0 star 0 star 1 star (1)
Callistephus chinensis King Size Apricot

20% off

Callistephus chinensis 'King Size Apricot'
£2.79 £2.23
approx 50 seeds
Callistephus chinensis Light Blue

20% off

Callistephus chinensis 'Light Blue'
£2.99 £2.39
approx 100 seeds
Campanula trachelium

20% off

Campanula trachelium
£2.99 £2.39
approx 150 seeds
Canna Phasion
Canna 'Phasion'
From £9.59
available to order from winter
0 star 1 star 1 star 1 star 1 star (7)
Canna Wyoming
Canna 'Wyoming'
From £5.59
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 £9.59
available to order from winter
Canna Tropicanna Black ('Lon01') (PBR)
Canna Tropicanna Black ('Lon01') (PBR)
From £7.99
available to order from winter
0.75 star 1 star 1 star 1 star 1 star (8)
Nepeta cataria

20% off

catnip
From £2.39
approx 150 seeds
9cm pot
2 + 1 FREE 9cm pots
0.5 star 1 star 1 star 1 star 1 star (2)
Cherry creme brûlée cutting garden collection

20% off

Cherry créme brûlée cutting garden collection
£25.33 £20.26
1 × collection
childrens grow bucket sunflower
childrens grow bucket 'sunflower'
£8.99 £7.19
available to order from winter
chilli Basket of Fire F1

20% off

chilli 'Basket of Fire' F1
£3.99 £3.19
approx 10 seeds
chilli Carolina Reaper

20% off

chilli 'Carolina Reaper'
£3.99 £3.19
approx 5 seeds
chilli Cayenne

20% off

chilli 'Cayenne'
From £5.59
8.5cm pot
2 + 1 FREE 8.5cm pots
1 star 1 star 1 star 1 star 1 star (1)
chilli Trinidad Moruga Scorpion

40% off

chilli 'Trinidad Scorpion'
£3.99 £2.39
approx 5 seeds
Chocolate orange container plant collection
Chocolate orange container plant collection
£31.96 £25.57
available to order from winter
Classic Canna collection
Classic canna collection
From £23.16
available to order from winter
Clematis Alionushka

20% off

Clematis 'Alionushka'
£28.95 £23.16
3 litre pot | 60cm cane
1 star 1 star 1 star 1 star 1 star (1)
Clematis Arabella

20% off

Clematis 'Arabella'
From £11.99
9cm pot | 30cm cane
3 litre pot | 60cm cane
2 + 1 FREE 9cm pots
0.75 star 1 star 1 star 1 star 1 star (10)
Clematis Fujimusume
Clematis 'Fujimusume'
£27.99 £22.39
available to order from summer
Clematis Minuet

20% off

Clematis 'Minuet'
£27.99 £22.39
3 litre pot | 60cm cane
0.75 star 1 star 1 star 1 star 1 star (3)
Clematis Pangbourne Pink
Clematis 'Pangbourne Pink'
£29.99 £23.99
available to order from summer
Clematis Warszawska Nike

20% off

Clematis 'Warszawska Nike'
From £11.99
3 litre pot | 60cm cane
1 star 1 star 1 star 1 star 1 star (2)
Clematis Bernadine ('Evipo061') (PBR) (Boulevard Series)

20% off

Clematis Bernadine ('Evipo061') (PBR) (Boulevard Series)
£34.99 £27.99
3 litre pot | 60cm cane
1 star 1 star 1 star 1 star 1 star (1)
Clematis Bijou ('Evipo030') (PBR) (Tudor Patio Series)
Clematis Bijou ('Evipo030') (PBR) (Tudor Patio Series)
£27.99 £22.39
available to order from summer
Clematis Bridgewater ('EviGsy155') (PBR)

20% off

Clematis Bridgewater ('EviGsy155') (PBR)
£34.99 £27.99
3 litre pot | 60cm cane
Clematis Corinne ('Evipo063') (PBR) (Boulevard Series)

20% off

Clematis Corinne ('Evipo063') (PBR) (Boulevard Series)
£32.95 £26.36
3 litre pot | 60cm cane
Clematis Crystal Fountain ('Evipo038') (PBR)

20% off

Clematis Crystal Fountain ('Evipo038') (PBR)
£32.95 £26.36
3 litre pot | 60cm cane
1 star 1 star 1 star 1 star 1 star (9)
Clematis Cézanne ('Evipo023') (PBR) (Boulevard Series)

20% off

Clematis Cézanne ('Evipo023') (PBR) (Boulevard Series)
£34.99 £27.99
3 litre pot | 60cm cane
Clematis Diamantina ('Evipo039') (PBR)

20% off

Clematis Diamantina ('Evipo039') (PBR)
£37.99 £30.39
3 litre pot | 60cm cane
1 star 1 star 1 star 1 star 1 star (1)
Clematis Diana's Delight ('Evipo026') (PBR) (Boulevard Series)

20% off

Clematis Diana's Delight ('Evipo026') (PBR) (Boulevard Series)
£28.99 £23.19
3 litre pot | 60cm cane
1 star 1 star 1 star 1 star 1 star (2)
Clematis Duchess of Cornwall ('Evipo118') (PBR)

20% off

Clematis Duchess of Cornwall ('Evipo118') (PBR)
£34.99 £27.99
3 litre pot | 60cm cane
0 star 0 star 0 star 0 star 1 star (1)
Clematis Edda ('Evipo074') (PBR) (Boulevard Series)
Clematis Edda ('Evipo074') (PBR) (Boulevard Series)
£28.99 £23.19
available to order from summer
Clematis Elpis ('EviGsy154') (PBR)

20% off

Clematis Elpis ('EviGsy154') (PBR)
£34.99 £27.99
3 litre pot | 60cm cane
Clematis Filigree ('Evipo029') (PBR) (Tudor Patio Series)
Clematis Filigree ('Evipo029') (PBR) (Tudor Patio Series)
£29.95 £23.96
available to order from summer
Clematis Giselle ('Evipo051') (PBR)

20% off

Clematis Giselle ('Evipo051') (PBR)
£34.99 £27.99
3 litre pot | 60cm cane
Clematis Guiding Promise ('Evipo053') (PBR) (Boulevard Series)
Clematis Guiding Promise ('Evipo053') (PBR) (Boulevard Series)
£34.99 £27.99
available to order from summer
Clematis heracleifolia Cassandra
Clematis heracleifolia 'Cassandra'
£29.99 £23.99
available to order from summer
Clematis integrifolia
Clematis integrifolia
£28.99 £23.19
available to order from summer
Clematis integrifolia Alba

20% off

Clematis integrifolia 'Alba'
£28.99 £23.19
2 litre pot
Clematis Issey ('Evipo081') (PBR)

20% off

Clematis Issey ('Evipo081') (PBR)
£34.99 £27.99
3 litre pot | 60cm cane
Clematis Josephine ('Evijohill') (PBR)

20% off

Clematis Josephine ('Evijohill') (PBR)
From £14.39
3 litre pot | 60cm cane
0.75 star 1 star 1 star 1 star 1 star (12)
Clematis Little Lemons ('Zo14100') (PBR)

20% off

Clematis Little Lemons ('Zo14100') (PBR)
£29.99 £23.99
2 litre pot
1 star 1 star 1 star 1 star 1 star (3)
Clematis Multi Pink ('ST17333') (PBR)

20% off

Clematis Multi Pink ('ST17333') (PBR)
£28.95 £23.16
2 litre pot | 60cm cane
0.5 star 1 star 1 star 1 star 1 star (17)
Clematis Nubia ('Evipo079') (PBR) (Boulevard Series)

20% off

Clematis Nubia ('Evipo079') (PBR)
£29.99 £23.99
3 litre pot | 60cm cane
0.5 star 1 star 1 star 1 star 1 star (2)
Clematis Olympia ('Evipo099') (PBR) (Boulevard Series)

20% off

Clematis Olympia ('Evipo099') (PBR) (Boulevard Series)
£29.99 £23.99
3 litre pot | 60cm cane
Clematis Pompeii ('Evipo116') (Boulevard Series)
Clematis Pompeii ('Evipo116') (Boulevard Series)
£31.95 £25.56
available to order from summer
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