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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
Sort by availability
All items
Showing Flowering month : September clear all
1812 items
Nymphaea Doll House
Nymphaea 'Doll House'
£38.99 £29.24
available to order from summer
Nymphaea Gloire du Temple-sur-Lot
Nymphaea 'Gloire du Temple-sur-Lot'
£52.99
available to order from summer
Nymphaea Gonnere

25% off

Nymphaea 'Gonnère'
From £29.99
10 litre pot
Nymphaea Hollandia
Nymphaea 'Hollandia'
From £38.99
3 litre aquatic pot
10 litre pot
30 litre pot
Nymphaea James Brydon
Nymphaea 'James Brydon'
£39.99 £29.99
available to order from summer
Nymphaea Laydekeri Fulgens
Nymphaea 'Laydekeri Fulgens'
£38.99 £29.24
available to order from summer
Nymphaea Marliacea Albida
Nymphaea 'Marliacea Albida'
£52.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star 4.5 5 2 (2)
Nymphaea Marliacea Chromatella
Nymphaea 'Marliacea Chromatella'
From £38.99
3 litre aquatic pot
10 litre aquatic pot
30 litre pot
Nymphaea Pygmaea Helvola

25% off

Nymphaea 'Pygmaea Helvola'
From £29.24
2 litre aquatic pot
Nymphaea alba
Nymphaea alba
From £38.99
3 litre aquatic pot
30 litre pot
3 × 30 litre pots
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Oenothera lindheimeri Whirling Butterflies

Best Seller

25% off

Oenothera lindheimeri 'Whirling Butterflies'
From £6.74
9cm pot
3 × 9cm pots
1 star 1 star 1 star 1 star 1 star 4.9 5 59 (59)
Oenothera lindheimeri Whiskers Deep Rose
Oenothera lindheimeri 'Whiskers Deep Rose'
From £7.49
available to order from summer
Oenothera lindheimeri Cherry Brandy ('Gauchebra') (PBR)
Oenothera lindheimeri Cherry Brandy ('Gauchebra')
From £6.74
available to order from summer
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Origanum Kent Beauty
Origanum 'Kent Beauty'
From £7.49
available to order from summer
1 star 1 star 1 star 1 star 1 star 5.0 5 5 (5)
Osteospermum Nairobi Purple
Osteospermum 'Nairobi Purple'
From £7.49
available to order from summer
Parahebe catarractae Avalanche (PBR)
Parahebe catarractae 'Avalanche' (PBR)
£24.99 £18.74
available to order from summer
Parahebe catarractae Pink Avalanche
Parahebe catarractae 'Pink Avalanche'
£24.99 £18.74
available to order from summer
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Passiflora caerulea Constance Eliott
Passiflora caerulea 'Constance Eliott'
From £13.49
available to order from summer
0.75 star 1 star 1 star 1 star 1 star 4.8 5 8 (8)
Pennisetum alopecuroides Little Bunny
Pennisetum alopecuroides 'Little Bunny'
From £7.49
available to order from summer
Pennisetum orientale JS® Dance With Me (PBR)
Pennisetum orientale 'JS Dance With Me' (PBR)
From £11.24
available to order from summer
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Penstemon Arabesque Appleblossom
Penstemon 'Arabesque Appleblossom'
From £7.49
available to order from summer
Penstemon Elmley

New

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

New

Penstemon 'Pensham Bilberry Ice' (Pensham Series)
From £6.74
available to order from summer
Penstemon White Bedder

25% off

Penstemon 'White Bedder'
From £6.74
2 litre pot
3 × 2 litre pots
0.5 star 1 star 1 star 1 star 1 star (15)
Perovskia Bluesette

New

Perovskia 'Bluesette'
From £7.49
available to order from summer
Phalaenopsis Formidablo Cameron Falls
Phalaenopsis Formidablo Cameron Falls | Orchid
From £69.99
available to order from summer
Phalaenopsis Optistar Hendrix
Phalaenopsis Hendrix | Orchid
From £34.99
available to order from summer
Phalaenopsis Optistar Lipa
Phalaenopsis Lipa | Orchid
From £34.99
available to order from summer
Phormium Platt's Black
Phormium 'Platt's Black'
£36.99 £27.74
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Phragmites australis
Phragmites australis
£32.99
available to order from summer
Physostegia virginiana
Physostegia virginiana
From £24.99
available to order from summer
Pileostegia viburnoides
Pileostegia viburnoides
£42.99 £32.24
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Rhododendron Encore Autumn Prince

New

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

New

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

New

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

New

Salvia 'Cream Soda'
From £8.99
available to order from summer
0 star 0 star 1 star 1 star 1 star (1)
Salvia Peach Melba
Salvia 'Peach Melba'
From £9.74
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Salvia guaranitica Black and Blue

25% off

Salvia guaranitica 'Black and Blue'
From £7.49
9cm pot
3 × 9cm pots
0.5 star 1 star 1 star 1 star 1 star (10)
Salvia Love and Wishes ('Serendip6') (PBR)
Salvia Love and Wishes ('Serendip6') (PBR)
From £7.49
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 £7.49
available to order from summer
Salvia nemorosa Crystal Blue (Color Spires Series)
Salvia nemorosa Crystal Blue (Color Spires Series)
From £7.49
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (2)
Salvia Tropicolour Carmine ('Troprd24') (Tropicolour Series)

New

Salvia Tropicolour Carmine ('Troprd24') (PBR) (Tropicolour Series)
From £8.99
available to order from summer
Salvia Tropicolour Claret ('Tropdwn24') (Tropicolour Series)

New

Salvia Tropicolour Claret ('Tropdwn24') (PBR) (Tropicolour Series)
From £8.99
available to order from summer
Salvia Tropicolour Sunrise ('Tropog021') (PBR) (Tropicolour Series)

New

Salvia Tropicolour Sunrise ('Tropog021') (PBR) (Tropicolour Series)
£11.99 £8.99
available to order from summer
Salvia uliginosa
Salvia uliginosa
From £14.24
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Salvia × jamensis Violette de Loire ('Barsal') (PBR)

New

Salvia × jamensis Violette de Loire ('Barsal) (PBR)
From £8.99
available to order from summer
Sanguisorba Blackthorn

New

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

New

Sanguisorba tenuifolia 'White Tanna'
From £9.74
available to order from summer
Saponaria ocymoides

New

Saponaria ocymoides
From £8.99
available to order from summer
Scabiosa Pink Mist
Scabiosa 'Pink Mist'
From £6.74
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (9)
Shake and sow Flowers for bees
Shake & sow - Flowers for bees
£7.99 £5.99
available to order from summer
Shake and sow Flowers for birds
Shake & sow - Flowers for birds
£7.99 £5.99
available to order from summer
Shake and sow Flowers for wildlife - bright mix
Shake & sow - Flowers for wildlife - bright mix
£7.99 £5.99
available to order from summer
Silene coronaria

25% off

Silene coronaria
From £1.87
9cm pot
3 × 9cm pots
0 star 0.75 star 1 star 1 star 1 star (3)
Silene vulgaris

New

Silene vulgaris
£2.99 £2.24
available to order from summer
Sporobolus heterolepis

New

Sporobolus heterolepis
From £11.24
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Stipa lessingiana
Stipa lessingiana
From £8.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (2)
Succisa pratensis
Succisa pratensis
From £11.24
available to order from summer
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