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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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Used at RHS Chelsea Flower Show
Kitchen garden planting guidelines
Sort by availability
All items
Showing Flowering month : September clear all
1811 items
Osteospermum Nairobi Purple
Osteospermum 'Nairobi Purple'
From £7.49
available to order from spring 2027
Passiflora caerulea Constance Eliott
Passiflora caerulea 'Constance Eliott'
From £13.49
available to order from spring 2027
0.75 star 1 star 1 star 1 star 1 star 4.8 5 8 (8)
Pennisetum orientale JS® Dance With Me (PBR)
Pennisetum orientale 'JS Dance With Me' (PBR)
From £11.24
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Penstemon Elmley

New

Penstemon 'Elmley'
From £6.74
available to order from spring 2027
Penstemon Pensham Bilberry Ice (Pensham Series)

New

Penstemon 'Pensham Bilberry Ice' (Pensham Series)
From £6.74
available to order from spring 2027
Perovskia Bluesette

New

Perovskia 'Bluesette'
From £7.49
available to order from spring 2027
Phalaenopsis Formidablo Cameron Falls
Phalaenopsis Formidablo Cameron Falls | Orchid
From £69.99
available to order from spring 2027
Phalaenopsis Optistar Hendrix
Phalaenopsis Hendrix | Orchid
From £34.99
available to order from spring 2027
Phalaenopsis Optistar Lipa
Phalaenopsis Lipa | Orchid
From £34.99
available to order from spring 2027
Phragmites australis
Phragmites australis
£32.99
available to order from spring 2027
Physostegia virginiana
Physostegia virginiana
From £24.99
available to order from spring 2027
Rhododendron Encore Autumn Prince

New

Rhododendron 'Encore Autumn Prince'
£29.99 £22.49
available to order from spring 2027
Romneya coulteri
Romneya coulteri
From £27.74
available to order from spring 2027
0.25 star 1 star 1 star 1 star 1 star 4.3 5 3 (3)
Rudbeckia fulgida Early Bird Gold
Rudbeckia fulgida 'Early Bird Gold'
From £9.74
available to order from spring 2027
Rudbeckia hirta Enchanted Flame
Rudbeckia hirta 'Enchanted Flame'
From £7.49
available to order from spring 2027
Rudbeckia hirta Enchanted Glow
Rudbeckia hirta 'Enchanted Glow'
From £7.49
available to order from spring 2027
Rudbeckia hirta Enchanted Summer Sunset
Rudbeckia hirta 'Enchanted Summer Sunset'
From £7.49
available to order from spring 2027
Sagittaria sagittifolia
Sagittaria sagittifolia
From £24.99
available to order from spring 2027
Salvia Back to the Fuchsia

New

Salvia 'Back to the Fuchsia'
From £9.74
available to order from spring 2027
Salvia Blue Butterflies

New

Salvia 'Blue Butterflies'
From £7.49
available to order from spring 2027
Salvia Cream Soda

New

Salvia 'Cream Soda'
From £8.99
available to order from spring 2027
0 star 0 star 1 star 1 star 1 star (1)
Salvia Peach Melba
Salvia 'Peach Melba'
From £9.74
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (1)
Salvia nemorosa Crystal Blue (Color Spires Series)
Salvia nemorosa Crystal Blue (Color Spires Series)
From £7.49
available to order from spring 2027
0.5 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 £8.99
available to order from spring 2027
Sanguisorba Blackthorn

New

Sanguisorba 'Blackthorn'
From £13.49
available to order from spring 2027
Sanguisorba tenuifolia White Tanna

New

Sanguisorba tenuifolia 'White Tanna'
From £9.74
available to order from spring 2027
Sporobolus heterolepis

New

Sporobolus heterolepis
From £11.24
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (1)
Stipa lessingiana
Stipa lessingiana
From £8.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (2)
Symphyotrichum novae-angliae Helen Picton
Symphyotrichum novae-angliae 'Helen Picton'
From £7.49
available to order from spring 2027
Tricyrtis formosana Autumn Glow

New

Tricyrtis formosana 'Autumn Glow'
£12.99 £9.74
available to order from spring 2027
Tropaeolum speciosum
Tropaeolum speciosum
£44.99 £33.74
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (1)
Typha latifolia
Typha latifolia
From £29.99
available to order from spring 2027
Verbascum Cherry Helen
Verbascum 'Cherry Helen'
From £9.74
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 £9.74
available to order from spring 2027
Verbascum Primrose Path

New

Verbascum 'Primrose Path'
From £9.74
available to order from spring 2027
Verbascum Peach Champagne (PBR)

New

Verbascum Peach Champagne (PBR)
From £9.74
available to order from spring 2027
Verbena officinalis var. grandiflora Bampton

25% off

Verbena officinalis var. grandiflora 'Bampton'
From £2.62
approx 50 seeds
0.75 star 1 star 1 star 1 star 1 star (10)
Veronica Caledonia
Veronica 'Caledonia'
£24.99 £18.74
available to order from spring 2027
0.75 star 1 star 1 star 1 star 1 star (11)
Veronica Mohawk
Veronica 'Mohawk'
£19.99 £14.99
available to order from spring 2027
Veronica Pink Pixie
Veronica 'Pink Pixie'
£19.99 £14.99
available to order from spring 2027
Vitex agnus-castus Queen Bee

New

Vitex agnus-castus 'Queen Bee'
£39.99 £29.99
available to order from spring 2027
Winter interest pond plant collection
Winter interest pond plant collection
£52.99
available to order from spring 2027
Achillea Moonshine

25% off

Achillea 'Moonshine'
From £7.49
2 litre pot
3 × 2 litre pots
0.5 star 1 star 1 star 1 star 1 star (23)
Agapanthus Midnight Moon ('DWHYB20') (PBR)
Agapanthus Midnight Moon ('DWHYB20') (PBR)
From £11.99
available to order from summer
Alstroemeria Beach Valley (Summer Paradise - Valley Series)
Alstroemeria Beach Valley (Summer Paradise - Valley Series)
From £18.74
available to order from summer
1 star 1 star 1 star 1 star 1 star (5)
Alstroemeria Inticancha Paraíso ('Tesparai') (PBR) (Inticancha Series)
Alstroemeria Inticancha Paraiso ('Tesparai') (PBR) (Inticancha Series)
From £18.74
available to order from summer
1 star 1 star 1 star 1 star 1 star (2)
Alstroemeria Valley Girl ('Tesvalgirl') (Summer Paradise - Valley Series)
Alstroemeria Valley Girl ('Tesvalgirl') (Summer Paradise - Valley Series)
From £18.74
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Amaryllis belladonna
Amaryllis belladonna
From £5.24
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Anemanthele lessoniana

Best Seller

Anemanthele lessoniana
From £7.49
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (52)
Anemone Wild Swan ('Macane001') (PBR)
Anemone Wild Swan ('Macane001') (PBR)
From £11.99
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (27)
Antirrhinum majus Madame Butterfly Pink
Antirrhinum majus 'Madame Butterfly Pink'
£4.49 £3.37
available to order from summer
Aster chinensis Silver Blue

New

Aster chinensis 'Silver Blue'
£4.99 £3.74
available to order from summer
Billardiera heterophylla Ultra Blue (PBR)
Billardiera heterophylla 'Ultra Blue' (PBR)
£29.99 £22.49
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (2)
blackberry Oregon Thornless
blackberry 'Oregon Thornless'
£21.99 £16.49
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Buddleja Bressingham Bountiful

New

Buddleja 'Bressingham Bountiful'
£24.99 £18.74
available to order from summer
Buddleja davidii Grand Cascade
Buddleja davidii 'Grand Cascade'
£26.99 £20.24
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Buddleja davidii White Profusion
Buddleja davidii 'White Profusion'
From £14.99
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (12)
Buddleja Little Purple (’BotEx 001’) (PBR) (Butterfly Candy Series)
Buddleja Little Purple (’BotEx 001’) (PBR) (Butterfly Candy Series)
£26.99 £20.24
available to order from summer
Buddleja Sugar Plum ('Lonplum') (PBR)
Buddleja Sugar Plum ('Lonplum') (PBR)
£24.99 £18.74
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (18)
Calendula officinalis Neon
Calendula officinalis 'Neon'
£2.49 £1.87
available to order from summer
Calluna vulgaris Dark Beauty
Calluna vulgaris 'Dark Beauty'
From £6.74
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Calycanthus Venus
Calycanthus 'Venus'
£99.99 £74.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (7)
Campanula lactiflora Loddon Anna

25% off

Campanula lactiflora 'Loddon Anna'
From £6.74
9cm pot
3 × 9cm pots
0.75 star 1 star 1 star 1 star 1 star (8)
Centaurea cyanus Classic Fantastic
Centaurea cyanus 'Classic Fantastic'
£2.99 £2.24
available to order from summer
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