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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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Used at RHS Chelsea Flower Show
Kitchen garden planting guidelines
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All items
Showing Flowering month : September clear all
1806 items
Buddleja × weyeriana Sungold
Buddleja × weyriana 'Sungold'
£19.99
2 litre pot
1 star 1 star 1 star 1 star 1 star 5.0 5 3 (3)
Bumbleberry Jam - Easyplanter for hanging baskets & patio pots

New

Bumbleberry Jam - Easyplanter for hanging baskets & patio pots
£26.99
sold out
Burnt orange dahlia collection
Burnt orange dahlia collection
From £15.99
available to order from summer
Burnt sugar dahlia collection

Best Seller

Burnt sugar dahlia collection
From £18.95
available to order from winter
Calamintha nepeta subsp. nepeta Blue Cloud
Calamintha nepeta subsp. nepeta 'Blue Cloud'
From £9.99
9cm pot
3 × 9cm pots
Citrus × microcarpa

15% off

calamondin orange
From £89.99
19cm pot | 60cm tall
Calendula officinalis
Calendula officinalis
From £2.79
approx 100 seeds
3 × packets of seeds
0.25 star 1 star 1 star 1 star 1 star 4.3 5 4 (4)
Calendula officinalis Fiesta Orange
Calendula officinalis 'Fiesta Orange'
From £6.99
available to order from winter
Calendula officinalis Indian Prince (Prince Series)
Calendula officinalis 'Indian Prince' (Prince Series)
From £2.69
approx 100 seeds
3 × packets of seeds
0.75 star 1 star 1 star 1 star 1 star 4.8 5 5 (5)
Calendula officinalis Neon
Calendula officinalis 'Neon'
£2.49
available to order from summer
Calendula officinalis Orange King
Calendula officinalis 'Orange King'
£2.49
approx 150 seeds
Calendula officinalis Sherbet Fizz
Calendula officinalis 'Sherbet Fizz'
£2.99
approx 100 seeds
0 star 1 star 1 star 1 star 1 star 4.0 5 1 (1)
Calendula officinalis Snow Princess
Calendula officinalis 'Snow Princess'
£2.89
approx 100 seeds
Calibrachoa Cabaret Double Magenta

New

Calibrachoa 'Cabaret Double Magenta'
From £7.99
available to order from winter
0.5 star 1 star 1 star 1 star 1 star 4.5 5 2 (2)
Calibrachoa Cabaret Double Sky Blue

New

Calibrachoa 'Cabaret Double Sky Blue'
From £7.99
available to order from winter
0 star 0 star 1 star 1 star 1 star 3.0 5 1 (1)
Calibrachoa Cabaret Double White

New

Calibrachoa 'Cabaret Double White'
From £7.99
available to order from winter
0 star 1 star 1 star 1 star 1 star 4.0 5 2 (2)
Calibrachoa Cabaret Early Orange (Cabaret Series)
Calibrachoa 'Cabaret Early Orange' (Cabaret Series)
From £7.99
available to order from winter
0.75 star 1 star 1 star 1 star 1 star 4.7 5 7 (7)
Calibrachoa Cabaret Early Pink (PBR) (Cabaret Series)
Calibrachoa 'Cabaret Early Pink' (Cabaret Series)
£10.99
5 × rooted cuttings
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Calibrachoa Caliloco Dracula

New

Calibrachoa 'Caliloco Dracula'
From £7.99
9cm pot
2 + 1 FREE 9cm pots
0 star 0 star 1 star 1 star 1 star 3.0 5 1 (1)
Calibrachoa Can-can Black Cherry (Can-can Series)
Calibrachoa 'Can-can Black Cherry' (Can-can Series)
From £7.99
available to order from winter
0 star 0.75 star 1 star 1 star 1 star 3.7 5 3 (3)
Calibrachoa Chameleon Lemon Frose

New

Calibrachoa 'Chameleon Lemon Frose'
From £7.99
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 £7.99
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 £7.99
available to order from winter
0 star 1 star 1 star 1 star 1 star (3)
Calibrachoa Calitastic Cappuccino ('Wescacacap') (Calitastic Series)
Calibrachoa Calitastic Cappuccino ('Wescacacap') (Calitastic Series)
From £7.99
9cm pot
2 + 1 FREE 9cm pots
0.25 star 1 star 1 star 1 star 1 star (3)
Calibrachoa Chameleon Blueberry Scone ('Wescachablusc')
Calibrachoa Chameleon Blueberry Scone ('Wescachablusc')
From £7.99
9cm pot
2 + 1 FREE 9cm pots
0 star 0 star 0 star 0 star 1 star (1)
Callistemon Inferno ('Yanferno') (PBR)
Callistemon Inferno ('Yanferno') (PBR)
£26.99
2 litre pot
Callistemon viminalis Hot Pink ('Kkho1') (PBR)
Callistemon viminalis Hot Pink ('Kkho1') (PBR)
£34.99
available to order from summer
Callistephus chinensis King Size Apricot
Callistephus chinensis 'King Size Apricot'
£2.79
approx 50 seeds
Callistephus chinensis Light Blue
Callistephus chinensis 'Light Blue'
£2.99
approx 100 seeds
Callitriche stagnalis
Callitriche stagnalis
£22.99
5 × plants
Calluna vulgaris Dark Beauty
Calluna vulgaris 'Dark Beauty'
From £8.99
9cm pot
3 × 9cm pots
1 star 1 star 1 star 1 star 1 star (1)
Calycanthus Venus
Calycanthus 'Venus'
£99.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (7)
Calycanthus × raulstonii Hartlage Wine
Calycanthus × raulstonii 'Hartlage Wine'
£99.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Campanula carpatica Blaue Clips
Campanula carpatica 'Blaue Clips'
From £7.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0.5 star 1 star 1 star 1 star 1 star (5)
Campanula carpatica f. alba Weisse Clips
Campanula carpatica f. alba 'Weisse Clips'
From £7.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0.25 star 1 star 1 star 1 star 1 star (6)
Campanula lactiflora Loddon Anna
Campanula lactiflora 'Loddon Anna'
From £8.99
2 litre pot
3 × 2 litre pots
0.75 star 1 star 1 star 1 star 1 star (8)
Campanula lactiflora Prichard's Variety
Campanula lactiflora 'Prichard's Variety'
From £8.99
2 litre pot
3 × 2 litre pots
0.5 star 1 star 1 star 1 star 1 star (10)
Campanula poscharskyana
Campanula poscharskyana
From £8.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0.5 star 1 star 1 star 1 star 1 star (2)
Campanula trachelium
Campanula trachelium
£2.99
approx 150 seeds
Campsis × tagliabueana Madame Galen
Campsis × tagliabueana 'Madame Galen'
£37.99
3 litre pot | 60cm cane
Campsis × tagliabueana Indian Summer ('Kudian') (PBR)
Campsis × tagliabueana Indian Summer ('Kudian') (PBR)
£37.99
3 litre pot | 60cm cane
Candyfloss dahlia collection

New

Candyfloss dahlia collection
From £23.95
available to order from winter
Canna Phasion
Canna 'Phasion'
From £11.99
available to order from winter
0 star 1 star 1 star 1 star 1 star (7)
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)
Caryopteris × clandonensis Dark Knight
Caryopteris × clandonensis 'Dark Knight'
From £19.99
2 litre pot
3 × 2 litre pots
0 star 0.75 star 1 star 1 star 1 star (7)
Caryopteris × clandonensis Heavenly Blue
Caryopteris × clandonensis 'Heavenly Blue'
From £22.99
2 litre pot
3 × 2 litre pots
0.5 star 1 star 1 star 1 star 1 star (15)
Caryopteris × clandonensis White Surprise (PBR)
Caryopteris × clandonensis 'White Surprise' (PBR)
£26.99
2 litre pot
Caryopteris × clandonensis Grand Bleu ('Inoveris') (PBR)
Caryopteris × clandonensis Grand Bleu ('Inoveris') (PBR)
£20.99
2 litre pot
1 star 1 star 1 star 1 star 1 star (1)
Caryopteris × clandonensis Hint of Gold ('Lisaura') (PBR)
Caryopteris × clandonensis Hint of Gold ('Lisaura') (PBR)
£22.99
2 litre pot
1 star 1 star 1 star 1 star 1 star (1)
Caryopteris × clandonensis Pink Perfection ('Lisspin') (PBR)
Caryopteris × clandonensis Pink Perfection ('Lisspin') (PBR)
£26.99
2 litre pot
1 star 1 star 1 star 1 star 1 star (1)
Caryopteris × clandonensis Sterling Silver ('Lissilv') (PBR)
Caryopteris × clandonensis Sterling Silver ('Lissilv') (PBR)
From £25.75
2 litre pot
3 × 2 litre pots
Nepeta cataria
catnip
From £2.99
approx 150 seeds
9cm pot
2 + 1 FREE 9cm pots
0.5 star 1 star 1 star 1 star 1 star (2)
Ceanothus Autumnal Blue
Ceanothus 'Autumnal Blue'
From £24.99
2 litre pot
3 × 2 litre pots
0.75 star 1 star 1 star 1 star 1 star (7)
Cenolophium denudatum
Cenolophium denudatum
From £14.99
9cm pot
2 litre pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star (4)
Centaurea cyanus
Centaurea cyanus
From £3.29
approx 200 seeds
3 × packets of seeds
0.5 star 1 star 1 star 1 star 1 star (2)
Centaurea cyanus Blue Ball
Centaurea cyanus 'Blue Ball'
£2.99
approx 325 seeds
Centaurea cyanus Classic Fantastic
Centaurea cyanus 'Classic Fantastic'
£2.99
available to order from summer
Centaurea cyanus Classic Magic

40% off

Centaurea cyanus 'Classic Magic'
£2.89 £1.73
approx 100 seeds
Centaurea cyanus Polka Dot Series
Centaurea cyanus 'Polka Dot Series'
£2.49
available to order from summer
Centaurea cyanus White Ball
Centaurea cyanus 'White Ball'
£2.49
approx 300 seeds
Centaurea nigra
Centaurea nigra
From £2.99
approx 20 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star (5)
Centaurea scabiosa
Centaurea scabiosa
£2.99
approx 20 seeds
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