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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
1814 items
Streptocarpus Alexis
Streptocarpus 'Alexis'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Angie

New

Streptocarpus 'Angie'
£16.99
1 × rooted cutting
Streptocarpus Betty
Streptocarpus 'Betty'
From £18.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Caitlin
Streptocarpus 'Caitlin'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Carys

New

Streptocarpus 'Carys'
£16.99
1 × rooted cutting
Streptocarpus Celebration
Streptocarpus 'Celebration'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Crystal Ice (PBR)
Streptocarpus 'Crystal Ice' (PBR) & ceramic pot cover
From £16.99
1 × rooted cutting
10cm pot | with 11cm white pot
2 + 1 FREE rooted cuttings
0.25 star 1 star 1 star 1 star 1 star 4.3 5 3 (3)
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 Falling Stars
Streptocarpus 'Falling Stars'
From £16.99
1 × rooted cutting
10cm pot | with 11cm white pot
2 + 1 FREE rooted cuttings
Streptocarpus Gloria

New

Streptocarpus 'Gloria'
£16.99
1 × rooted cutting
Streptocarpus Hannah
Streptocarpus 'Hannah'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Harlequin Blue (PBR)
Streptocarpus 'Harlequin Blue' (PBR)
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Harlequin Purple (PBR)
Streptocarpus 'Harlequin Purple' (PBR)
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Hope
Streptocarpus 'Hope'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Katie
Streptocarpus 'Katie'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Leah
Streptocarpus 'Leah' & ceramic pot cover
£32.99
10cm pot | with 11cm white pot
Streptocarpus Lemon Sorbet
Streptocarpus 'Lemon Sorbet'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Mabel
Streptocarpus 'Mabel'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Polka-Dot Pink

New

Streptocarpus 'Polka-Dot Pink'
£18.99
1 × rooted cutting
Streptocarpus Polka-Dot Purple
Streptocarpus 'Polka-Dot Purple' & ceramic pot cover
From £18.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
12cm pot | with 13cm white pot
Streptocarpus Sirius

New

Streptocarpus 'Sirius' & ceramic pot cover
£44.99
12cm pot | with 13cm white pot
Streptocarpus Sphinx
Streptocarpus 'Sphinx'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Targa
Streptocarpus 'Targa' & ceramic pot cover
From £16.99
1 × rooted cutting
10cm pot | with 11cm white pot
2 + 1 FREE rooted cuttings
Streptocarpus Tina
Streptocarpus 'Tina'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
1 star 1 star 1 star 1 star 1 star (1)
Streptocarpus Zoe
Streptocarpus 'Zoe'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus collection
Streptocarpus collection
£41.99
1 × collection | 6 plants
1 star 1 star 1 star 1 star 1 star (1)
Wildlife pond plant collection
Wildlife pond plant collection
From £44.99
3 × 1 litre aquatic pots
6 × 9cm pots
6 × 1 litre aquatic pots
4 × 3 litre aquatic pots
+ 1 more available
Abutilon megapotamicum
Abutilon megapotamicum
£32.99
3 litre pot | 60cm cane
1 star 1 star 1 star 1 star 1 star (1)
Chrysanthemum Clara Curtis
Chrysanthemum 'Clara Curtis'
From £9.99
9cm pot
3 × 9cm pots
Clematis Alionushka
Clematis 'Alionushka'
£28.95
3 litre pot | 60cm cane
1 star 1 star 1 star 1 star 1 star (1)
Clematis Dark Eyes
Clematis 'Dark Eyes'
£22.95
3 litre pot | 60cm cane
0.25 star 1 star 1 star 1 star 1 star (3)
Clematis Minuet
Clematis 'Minuet'
£27.99
3 litre pot | 60cm cane
0.75 star 1 star 1 star 1 star 1 star (3)
Clematis terniflora
Clematis terniflora
£27.99
3 litre pot | 60cm cane
Clematis The Countess of Wessex ('Evipo073') (PBR) (Boulevard Series)
Clematis The Countess of Wessex ('Evipo073') (PBR) (Boulevard Series)
£27.99
3 litre pot | 60cm cane
Daphne × transatlantica Eternal Fragrance ('Blafra') (PBR)
Daphne × transatlantica Eternal Fragrance ('Blafra') (PBR)
From £27.99
2 litre pot
0 star 1 star 1 star 1 star 1 star (18)
Echinacea Harvest Moon (PBR) (Big Sky Series)
Echinacea 'Harvest Moon' (PBR) (Big Sky Series)
From £14.99
9cm pot
3 × 9cm pots
Echium pininana
Echium pininana
From £4.49
approx 20 seeds
Molinia caerulea subsp. caerulea Edith Dudszus
Molinia caerulea subsp. caerulea 'Edith Dudszus'
From £12.99
9cm pot
3 × 9cm pots
Nymphaea Laydekeri Lilacea
Nymphaea 'Laydekeri Lilacea'
£38.99
1 litre aquatic pot
Passiflora Amethyst
Passiflora 'Amethyst'
From £17.99
3 litre pot | 60cm cane
0 star 0.75 star 1 star 1 star 1 star (3)
Penstemon Pensham Plum Jerkum (Pensham Series)
Penstemon 'Pensham Plum Jerkum' (Pensham Series)
From £8.99
9cm pot
2 litre pot
3 × 9cm pots
6 × 9cm pots
+ 1 more available
0.75 star 1 star 1 star 1 star 1 star (11)
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)
Rosa Buff Beauty

40% off

Rosa Buff Beauty | Hybrid Musk Rose
£28.99 £17.39
4 litre pot
1 star 1 star 1 star 1 star 1 star (3)
Rosa Pacific Blue ('Tan98485')

40% off

Rosa Pacific Blue ('Tan98485') | Hybrid Tea Rose
£39.99 £23.99
4 litre pot
Rosa White Pet

40% off

Rosa White Pet | Shrub Rose
£34.99 £20.99
4 litre pot
Sesleria autumnalis

Best Seller

Sesleria autumnalis
From £19.99
2 litre pot
3 × 2 litre pots
0 star 0 star 1 star 1 star 1 star (2)
Weigela Picobella Rosa ('Tvp2') (PBR)
Weigela Picobella Rosa ('Tvp2') (PBR)
£23.99
2 litre pot
1 star 1 star 1 star 1 star 1 star (2)
A tale of summer blooms dahlia collection
A tale of summer blooms dahlia collection
From £18.95
available to order from winter
Agapanthus collection
Agapanthus collection
From £12.95
available to order from winter
Agastache and Angelica plant combination
Agastache & Angelica plant combination
£65.94
6 × plants | 3 of each
Agastache and Helenium plant combination
Agastache & Helenium plant combination
£59.94
6 × plants | 3 of each
Amethyst spires mini-border collection
Amethyst spires mini-border collection
£57.99
6 × 9cm plants
Antique peach dahlia collection
Antique peach dahlia collection
From £30.45
available to order from winter
Aquilegia and Anemanthele plant combination
Aquilegia & Anemanthele plant combination
£59.94
6 × plants | 3 of each
Ashley's balcony 5 varieties dahlia collection
Ashley's balcony 5 varieties dahlia collection
From £29.95
available to order from winter
Ashley's balcony dahlia collection
Ashley's balcony dahlia collection
From £17.95
available to order from winter
Ashley's flight of the butterflies dahlia collection
Ashley's flight of the butterflies dahlia collection
From £29.25
available to order from winter
Award-winning border favourite dahlia collection
Award-winning border favourite dahlia collection
From £15.99
available to order from winter
Award-winning crocosmia collection
Award-winning crocosmia collection
From £18.95
available to order from winter
Award-winning dahlia collection for pots
Award-winning dahlia collection for pots
From £17.75
available to order from winter
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 Penstemon collection

New

Award-winning Penstemon collection
From £26.97
1 × collection
3 × collections
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