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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
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All items
Showing Flowering month : September clear all
454 items
Cosmos bipinnatus Double Click Rose Bonbon (Double Click Series)

25% off

Cosmos bipinnatus 'Double Click Rose Bonbon' (Double Click Series)
£4.99 £3.74
approx 75 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Cosmos bipinnatus Hummingbird Lilac

25% off

Cosmos bipinnatus 'Hummingbird Lilac'
£3.49 £2.62
approx 40 seeds
Cosmos bipinnatus Sensation Picotee (Sensation Series)

25% off

Cosmos bipinnatus 'Sensation Picotee' (Sensation Series)
£4.99 £3.74
approx 75 seeds
0.75 star 1 star 1 star 1 star 1 star 4.7 5 3 (3)
Cosmos bipinnatus Sensation Pinkie (Sensation Series)

25% off

Cosmos bipinnatus 'Sensation Pinkie' (Sensation Series)
£2.99 £2.24
approx 100 seeds
Viola tricolor

25% off

heartease
£2.79 £2.09
approx 75 seeds
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 5.0 5 1 (1)
Prunella vulgaris

25% off

Prunella vulgaris
From £2.24
approx 100 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
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 3.0 5 2 (2)
Thymus serpyllum

New

25% off

Thymus serpyllum
£2.99 £2.24
approx 200 seeds
Verbascum Southern Charm

New

25% off

Verbascum 'Southern Charm'
£4.99 £3.74
approx 10 seeds
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 5.0 5 2 (2)
Agrostemma githago

25% off

Agrostemma githago
£3.29 £2.47
approx 75 seeds
Bellis perennis

New

25% off

Bellis perennis - common daisy
£3.99 £2.99
approx 750 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 5.0 5 1 (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
Blue and white cutting garden collection

25% off

Blue & white cutting garden collection
£11.36 £8.52
1 × collection
Nymphaea Attraction
Nymphaea 'Attraction'
From £39.99
3 litre aquatic pot
10 litre pot
30 litre pot
Nymphaea Caroliniana Nivea
Nymphaea 'Caroliniana Nivea'
£39.99
3 litre aquatic pot
Nymphaea James Brydon
Nymphaea 'James Brydon'
£39.99
3 litre aquatic pot
Nymphaea Solfatare
Nymphaea 'Solfatare'
£39.99
3 litre aquatic pot
Anagallis tenella
Anagallis tenella
From £24.99
1 litre aquatic pot
3 × 9cm pots
3 × 1 litre aquatic pots
Lythrum salicaria

25% off

Lythrum salicaria
From £18.74
1 litre aquatic pot
3 × 9cm pots
3 × 1 litre aquatic pots
1 star 1 star 1 star 1 star 1 star (1)
Oenanthe japonica Flamingo
Oenanthe japonica 'Flamingo'
From £24.99
1 litre aquatic pot
3 × 9cm pots
3 litre aquatic pot
3 × 1 litre aquatic pots
Cyperus longus
Cyperus longus
From £24.99
1 litre aquatic pot
3 × 1 litre aquatic pots
Nymphaea Marliacea Chromatella
Nymphaea 'Marliacea Chromatella'
From £38.99
3 litre aquatic pot
10 litre aquatic pot
30 litre pot
Pontederia cordata f. albiflora
Pontederia cordata f. albiflora
£42.99
3 litre aquatic pot
Borago officinalis Alba

25% off

borage - white borage
£3.19 £2.39
approx 50 seeds
1 star 1 star 1 star 1 star 1 star (2)
Phalaenopsis Boquetto Romantico
Phalaenopsis Boquetto Romantico | Orchid
From £44.99
12cm pot | 35cm tall
with white pot
with terracotta pot
with brass pot
Nepeta cataria

25% off

catnip
From £2.24
approx 150 seeds
0.5 star 1 star 1 star 1 star 1 star (2)
Artemisia dracunculus French
tarragon 'French'
From £7.99
9cm pot
2 + 1 FREE 9cm pots
0 star 0.75 star 1 star 1 star 1 star (3)
Lavandula angustifolia
lavender - common
From £7.99
9cm pot
2 + 1 FREE 9cm pots
1 star 1 star 1 star 1 star 1 star (2)
Phalaenopsis Aromio Honey
Phalaenopsis Aromio Honey | Scented Orchid
From £22.99
7cm pot | 25cm tall
with ribbed terracotta pot
with green ombre pot
with terracotta pot
1 star 1 star 1 star 1 star 1 star (1)
Phalaenopsis Aromio Spring
Phalaenopsis Aromio Spring | Scented Orchid
From £24.99
7cm pot | 25cm tall
with ribbed terracotta pot
with green ombre pot
with terracotta pot
1 star 1 star 1 star 1 star 1 star (1)
Phalaenopsis Boquetto Beauty
Phalaenopsis Boquetto Beauty | Orchid
From £44.99
12cm pot | 45cm tall
with white pot
with terracotta pot
with brass pot
Phalaenopsis Fontano Bellagio
Phalaenopsis Fontano Bellagio | Orchid
From £54.99
12cm pot | 50cm tall
with glazed rust pot
with brass pot
Phalaenopsis Formidablo Iguaza Falls
Phalaenopsis Formidablo Iguaza Falls | Orchid
From £69.99
12cm pot | 60cm tall
with white pot
with terracotta pot
with verdigris pot
Phalaenopsis Split
Phalaenopsis Split | Orchid
From £26.99
12cm pot | 60cm tall
with silver pot
with white pot
Phalaenopsis Optistar Turner
Phalaenopsis Turner | Orchid
From £39.99
12cm pot | 60cm tall
with terracotta pot
with verdigris pot
with brass pot
Phalaenopsis Exclusivo Violet Queen
Phalaenopsis Violet Queen | Orchid
From £36.99
12cm pot | 45cm tall
with silver pot
with terracotta pot
with brass pot
Streptocarpus Betty
Streptocarpus 'Betty'
From £18.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Phalaenopsis Bellissimo Angelo
Phalaenopsis Bellissimo Angelo | Orchid
From £79.99
15cm pot | 50cm tall
with white pot
with terracotta pot
with grey terracotta pot
+ 1 more available
Phalaenopsis Fortuno Alto
Phalaenopsis Fortuno Alto | Orchid
From £99.99
17cm pot | 110cm tall
with teal pot
with rustic dark brown pot
with terracotta pot
Alocasia Tiny Dancers
Alocasia 'Tiny Dancers'
£16.99
12cm pot | 30cm tall
Phalaenopsis Bolgheri Lemon
Phalaenopsis Bolgheri Lemon | Scented Orchid
From £29.99
12cm pot | 50cm tall
with white pot
with terracotta pot
1 star 1 star 1 star 1 star 1 star (1)
Phalaenopsis Boquetto Temptation
Phalaenopsis Boquetto Temptation | Orchid
From £44.99
12cm pot | 35cm tall
with white pot
with terracotta pot
with brass pot
Phalaenopsis Honey Peach
Phalaenopsis Honey Peach | Orchid
From £29.99
12cm pot | 65cm tall
with green pot
with white glass pot
with terracotta pot
Phalaenopsis Nantes
Phalaenopsis Nantes | Orchid
From £29.99
12cm pot | 60cm tall
with white pot
with verdigris pot
Fatsia japonica
Fatsia japonica
From £19.99
17cm pot | 60cm tall
with white pot
Streptocarpus Sirius

New

Streptocarpus 'Sirius' & ceramic pot cover
£44.99
12cm pot | with 13cm white pot
Award-winning Streptocarpus collection
Award-winning Streptocarpus collection
£41.99
1 × collection | 6 plants
0 star 1 star 1 star 1 star 1 star (1)
Streptocarpus collection Blue and Pink
Blue and pink streptocarpus collection
£41.99
1 × collection | 6 plants
Streptocarpus Angie

New

Streptocarpus 'Angie'
£16.99
1 × rooted cutting
Streptocarpus Carys

New

Streptocarpus 'Carys'
£16.99
1 × rooted cutting
Streptocarpus Dolina
Streptocarpus 'Dolina'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Faith

New

Streptocarpus 'Faith'
£16.99
1 × rooted cutting
Streptocarpus Gloria

New

Streptocarpus 'Gloria'
£16.99
1 × rooted cutting
Streptocarpus Polka-Dot Pink

New

Streptocarpus 'Polka-Dot Pink'
£18.99
1 × rooted cutting
Streptocarpus collection
Streptocarpus collection
£41.99
1 × collection | 6 plants
1 star 1 star 1 star 1 star 1 star (1)
Blue spires and spots mini-border collection
Blue spots and spires mini-border collection
£57.99
available to order from spring 2027
Sesleria autumnalis

Best Seller

Sesleria autumnalis
From £19.99
available to order from summer
0 star 0 star 1 star 1 star 1 star (2)
Citrus × limon Four Seasons

Best Seller

lemon 'Four Seasons'
From £89.99
available to order from winter
0.5 star 1 star 1 star 1 star 1 star (17)
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
Penstemon heterophyllus Heavenly Blue

New

Penstemon heterophyllus 'Heavenly Blue'
From £8.99
available to order from summer
Dusky violet shade mini-border collection

New

Dusky violet shade mini-border collection
From £54.99
available to order from summer
Heavenly Penstemon collection

New

Heavenly Penstemon collection
From £24.27
available to order from summer
Pensham Penstemon collection

New

Pensham Penstemon collection
From £26.97
available to order from spring 2027
Sarah's Chelsea daisy susan combination
Sarah's Chelsea 'daisy susan combination'
From £54.96
available to order from spring 2027
Sarah's Chelsea lavender susan combination
Sarah's Chelsea 'lavender susan combination'
From £56.96
available to order from spring 2027
Sarah's Chelsea silver susan combination
Sarah's Chelsea 'silver susan combination'
From £56.96
available to order from spring 2027
Sesleria and empoli pot combination
Sesleria & empoli pot combination
£84.98
Angelica sylvestris Vicar's Mead
Angelica sylvestris 'Vicar's Mead'
From £13.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (1)
Euphorbia ceratocarpa
Euphorbia ceratocarpa
From £11.99
available to order from spring 2027
Geranium × oxonianum Rose Clair

New

Geranium × oxonianum 'Rose Clair'
From £11.99
available to order from spring 2027
Osteospermum Nairobi Purple
Osteospermum 'Nairobi Purple'
From £9.99
available to order from spring 2027
Salvia Blue Butterflies

New

Salvia 'Blue Butterflies'
From £9.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (2)
Salvia × jamensis Violette de Loire ('Barsal') (PBR)

New

Salvia × jamensis Violette de Loire ('Barsal) (PBR)
From £11.99
available to order from spring 2027
Sanguisorba Blackthorn

New

Sanguisorba 'Blackthorn'
From £17.99
available to order from spring 2027
Verbascum Cherry Helen
Verbascum 'Cherry Helen'
From £12.99
available to order from spring 2027
0.5 star 1 star 1 star 1 star 1 star (2)
Verbascum Honey Dijon

New

Verbascum 'Honey Dijon'
£12.99
available to order from spring 2027
Verbascum Primrose Path

New

Verbascum 'Primrose Path'
From £12.99
available to order from spring 2027
Verbascum Peach Champagne (PBR)

New

Verbascum Peach Champagne (PBR)
From £12.99
available to order from spring 2027
Agapanthus BlackJack ('Dwaghyb02') (PBR)
Agapanthus BlackJack ('Dwaghyb02') (PBR)
From £16.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (2)
Diascia Monhop Pink

New

Diascia 'Monhop Pink'
From £10.99
available to order from summer
Eryngium × zabelii Jos Eijking
Eryngium × zabelii 'Jos Eijking'
From £12.99
available to order from summer
0.25 star 1 star 1 star 1 star 1 star (4)
Liriope muscari Okina
Liriope muscari 'Okina'
From £12.99
available to order from summer
0 star 0.5 star 1 star 1 star 1 star (5)
Oenothera lindheimeri Cherry Brandy ('Gauchebra') (PBR)
Oenothera lindheimeri Cherry Brandy ('Gauchebra')
From £8.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Osteospermum In The Pink
Osteospermum 'In The Pink'
From £12.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Salvia Blue Note (PBR)

New

Salvia 'Blue Note' (PBR)
From £5.00
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Salvia microphylla Cerro Potosi

New

Salvia microphylla 'Cerro Potosi'
From £9.99
available to order from summer
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)
Verbascum Clementine
Verbascum 'Clementine'
From £12.99
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (4)
Viola Etain
Viola 'Etain'
From £8.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Viola Molly Sanderson

New

Viola 'Molly Sanderson'
From £9.99
sold out
Passiflora caerulea Constance Eliott
Passiflora caerulea 'Constance Eliott'
From £17.99
available to order from spring 2027
0.75 star 1 star 1 star 1 star 1 star (8)
Award-winning honeysuckle collection
Award-winning honeysuckle collection
£44.97
available to order from spring 2027
Four seasons clematis collection
Four seasons clematis collection
£62.96
available to order from spring 2027
Passion flower collection
Passion flower collection
£53.97
available to order from spring 2027
Abutilon Canary Bird
Abutilon 'Canary Bird'
£32.99
available to order from spring 2027
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