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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
Kitchen garden planting guidelines
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All items
Showing Flowering month : September clear all
1205 items
Border salvia collection

New

Border salvia collection
From £41.96
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
Edible flowers plant and seed combination
Edible flowers plant & seed combination
£29.26 £28.44
available to order from summer
Favourite salvia collection

New

Favourite salvia collection
From £31.97
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
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 5.0 5 1 (1)
Dahlia Alauna Clair-obscur
Dahlia 'Alauna Clair-obscur'
From £14.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star 4.9 5 10 (10)
Dahlia Strawberry Bon Bon (Sweet Candy Series)
Dahlia 'Strawberry Bon Bon' (Sweet Candy Series)
From £14.99
available to order from spring 2027
Dahlia Tartan
Dahlia 'Tartan'
From £14.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star 5.0 5 2 (2)
Echinacea Fried Egg

New

Echinacea 'Fried Egg'
From £14.99
available to order from spring 2027
Echinacea KISMET® Kiwi

New

Echinacea 'KISMET® Kiwi'
From £12.99
available to order from spring 2027
Geranium Elke
Geranium 'Elke'
From £9.99
available to order from spring 2027
0.5 star 1 star 1 star 1 star 1 star 4.6 5 16 (16)
Geranium nodosum Fielding's Folly
Geranium nodosum 'Fielding's Folly'
From £12.99
available to order from spring 2027
Geranium pratense Cloud Nine (PBR)

New

Geranium pratense 'Cloud Nine' (PBR)
From £9.99
available to order from spring 2027
Geranium × oxonianum Rose Clair

New

Geranium × oxonianum 'Rose Clair'
From £11.99
available to order from spring 2027
Ligusticopsis wallichiana

New

Ligusticopsis wallichiana
From £2.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star 4.9 5 9 (9)
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)
Oenothera lindheimeri Whiskers Deep Rose
Oenothera lindheimeri 'Whiskers Deep Rose'
From £9.99
available to order from spring 2027
Osteospermum Nairobi Purple
Osteospermum 'Nairobi Purple'
From £9.99
available to order from spring 2027
Romneya coulteri
Romneya coulteri
From £36.99
available to order from spring 2027
0.25 star 1 star 1 star 1 star 1 star (3)
Rudbeckia fulgida Early Bird Gold
Rudbeckia fulgida 'Early Bird Gold'
From £12.99
available to order from spring 2027
Salvia Back to the Fuchsia

New

Salvia 'Back to the Fuchsia'
From £12.99
available to order from spring 2027
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
Symphyotrichum novae-angliae Helen Picton
Symphyotrichum novae-angliae 'Helen Picton'
From £9.99
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)
Aster amellus King George
Aster amellus 'King George'
From £9.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (6)
Centranthus ruber Albus
Centranthus ruber 'Albus'
From £8.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (9)
Chrysanthemum Clara Curtis
Chrysanthemum 'Clara Curtis'
From £9.99
available to order from summer
Diascia Monhop Pink

New

Diascia 'Monhop Pink'
From £10.99
available to order from summer
Echinacea Harvest Moon (PBR) (Big Sky Series)
Echinacea 'Harvest Moon' (PBR) (Big Sky Series)
From £14.99
available to order from summer
Echinacea pallida Hula Dancer
Echinacea pallida 'Hula Dancer'
From £11.99
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)
Glandularia Claret
Glandularia 'Claret'
From £7.99
available to order from summer
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)
Oenothera lindheimeri Freefolk Rosy ('Harrfolk')
Oenothera lindheimeri Freefolk Rosy ('Harrfolk')
From £9.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (5)
Origanum Kent Beauty
Origanum 'Kent Beauty'
From £9.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (7)
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)
Phlox paniculata Franz Schubert
Phlox paniculata 'Franz Schubert'
From £17.99
available to order from summer
0 star 0 star 1 star 1 star 1 star (2)
Phlox paniculata Rembrandt
Phlox paniculata 'Rembrandt'
From £8.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (4)
Salvia Love and Wishes ('Serendip6') (PBR)
Salvia Love and Wishes ('Serendip6') (PBR)
From £9.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (6)
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)
Symphyotrichum novae-angliae Andenken an Alma Pötschke
Symphyotrichum novae-angliae 'Andenken an Alma Pötschke'
From £19.99
available to order from summer
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)
Alcalthaea suffrutescens Parkallee
× Alcalthaea suffrutescens 'Parkallee'
From £12.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (2)
Agapanthus Poppin' Pink ('2020/07') (PBR)
Agapanthus Poppin' Pink ('2020/07') (PBR)
£19.99
sold out
Dahlia Cornel
Dahlia 'Cornel'
£14.99
sold out
Echinacea purpurea Pink Double Delight (PBR) (Cone-fections Series)
Echinacea purpurea 'Pink Double Delight' (PBR) (Cone-fections Series)
From £14.99
sold out
0 star 0 star 1 star 1 star 1 star (1)
Hesperantha coccinea Cindy Towe
Hesperantha coccinea 'Cindy Towe'
From £12.99
sold out
Alstroemeria Valley Wild ('Tesvalwild') (Summer Paradise - Valley Series)
Alstroemeria Valley Wild ('Tesvalwild') (Summer Paradise - Valley Series)
From £22.99
available to order from spring 2027
Alstroemeria Beach Valley (Summer Paradise - Valley Series)
Alstroemeria Beach Valley (Summer Paradise - Valley Series)
From £24.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (5)
Alstroemeria Valley Girl ('Tesvalgirl') (Summer Paradise - Valley Series)
Alstroemeria Valley Girl ('Tesvalgirl') (Summer Paradise - Valley Series)
From £24.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Award-winning honeysuckle collection
Award-winning honeysuckle collection
£44.97
available to order from spring 2027
Award-winning late-summer flowering clematis collection
Award-winning late-summer flowering clematis collection
£44.97
available to order from summer
Award-winning spring, summer & autumn clematis collection
Award-winning spring, summer & autumn clematis collection
£47.97
available to order from summer
Award-winning summer flowering clematis collection
Award-winning summer flowering clematis 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
Lathyrus latifolius collection
Lathyrus latifolius collection
From £29.99
available to order from spring 2027
Passion flower collection
Passion flower collection
£53.97
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
Lathyrus latifolius White Pearl
Lathyrus latifolius 'White Pearl'
From £14.99
available to order from spring 2027
0 star 0.75 star 1 star 1 star 1 star (7)
Lonicera periclymenum Chic et Choc ('Inov205') (PBR)

New

Lonicera periclymenum Chic et Choc ('Inov205') (PBR)
£27.99
available to order from spring 2027
Clematis Sea Breeze ('Zo09063') (PBR)
Clematis Sea Breeze ('Zo09063') (PBR)
£29.99
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (4)
Clematis White Arabella ('Zo14089') (PBR)
Clematis White Arabella ('Zo14089') (PBR)
£34.99
available to order from summer
Hydrangea hydrangeoides var. hydrangeoides Roseum
Hydrangea hydrangeoides var. hydrangeoides 'Roseum'
£34.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (2)
Lathyrus latifolius Red Pearl
Lathyrus latifolius 'Red Pearl'
From £14.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Lavandula angustifolia Imperial Gem
Lavandula angustifolia 'Imperial Gem'
From £7.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (7)
Lavandula angustifolia Melissa Lilac ('Dow4') (PBR)
Lavandula angustifolia Melissa Lilac ('Dow4') (PBR)
From £7.99
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (4)
Hydrangea macrophylla Blushing Bride
Hydrangea macrophylla 'Blushing Bride'
£17.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (6)
Hydrangea macrophylla Zebra (PBR) (Black Steel Series)
Hydrangea macrophylla 'Zebra' (PBR) (Black Steel Series)
£19.99 £13.99
available to order from summer
0.25 star 1 star 1 star 1 star 1 star (20)
Hydrangea macrophylla White
Hydrangea macrophylla 'White'
£19.99
available to order from summer
Buddleja Little Rock Stars Red ('Botex 009') (PBR)

New

Buddleja Little Rock Stars Red ('Botex 009') (PBR)
£27.99
available to order from spring 2027
Callistemon viminalis Hot Pink ('Kkho1') (PBR)
Callistemon viminalis Hot Pink ('Kkho1') (PBR)
£34.99
available to order from spring 2027
Calycanthus × raulstonii Hartlage Wine
Calycanthus × raulstonii 'Hartlage Wine'
£99.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (1)
Daphne × transatlantica Summer Ice
Daphne × transatlantica 'Summer Ice'
£36.99
available to order from spring 2027
Eucalyptus gunnii France Bleu ('Rengun') (PBR)

New

Eucalyptus gunnii France Bleu ('Rengun') (PBR)
£34.99
available to order from spring 2027
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
Hydrangea macrophylla Dark Angel Red
Hydrangea macrophylla 'Dark Angel Red'
£17.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (10)
Hydrangea macrophylla Koria (PBR)
Hydrangea macrophylla 'Koria' (PBR)
£19.99
available to order from spring 2027
Hydrangea quercifolia Tara
Hydrangea quercifolia 'Tara'
£29.99
available to order from spring 2027
Hydrangea serrata Choco White ('Darwhite') (PBR)

New

Hydrangea serrata Choco White ('Darwhite') (PBR)
£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
Magnolia grandiflora
Magnolia grandiflora
£44.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (6)
Perovskia Bluesette

New

Perovskia 'Bluesette'
From £9.99
available to order from spring 2027
Rhododendron Encore Autumn Prince

New

Rhododendron 'Encore Autumn Prince'
£29.99
available to order from spring 2027
Veronica Caledonia
Veronica 'Caledonia'
£24.99
available to order from spring 2027
0.75 star 1 star 1 star 1 star 1 star (11)
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