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Plants that Flower in August

Make sure the display in the borders does not start to fade by adding dahlias, penstemons and hydrangeas.

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Used at RHS Chelsea Flower Show
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All items
Showing Flowering month : August clear all
135 items
Agastache Blue Fortune
Agastache 'Blue Fortune'
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 4.7 5 44 (44)
Verbena bonariensis

Best Seller

25% off

Verbena bonariensis
From £2.62
approx 250 seeds
3 × packets (approx 750 seeds)
9cm pot
2 litre pot
+ 3 more available
0.75 star 1 star 1 star 1 star 1 star 4.7 5 156 (156)
Nepeta racemosa Walker's Low

Best Seller

Nepeta racemosa 'Walker's Low'
From £8.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0.75 star 1 star 1 star 1 star 1 star 4.7 5 24 (24)
Phlomoides tuberosa Amazone

Best Seller

Phlomoides tuberosa 'Amazone'
From £12.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0.5 star 1 star 1 star 1 star 1 star 4.6 5 11 (11)
Veronicastrum virginicum Fascination
Veronicastrum virginicum 'Fascination'
From £12.99
9cm pot
3 × 9cm pots
0 star 1 star 1 star 1 star 1 star 4.0 5 13 (13)
Thalictrum delavayi
Thalictrum delavayi
From £9.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0.5 star 1 star 1 star 1 star 1 star 4.4 5 16 (16)
Achillea millefolium Lilac Beauty
Achillea millefolium 'Lilac Beauty'
From £9.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0.75 star 1 star 1 star 1 star 1 star 4.8 5 9 (9)
Geranium Lilac Ice
Geranium 'Lilac Ice'
From £12.99
9cm pot
3 × 9cm pots
0.75 star 1 star 1 star 1 star 1 star 4.7 5 9 (9)
Salvia nemorosa Amethyst
Salvia nemorosa 'Amethyst'
From £8.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0.75 star 1 star 1 star 1 star 1 star 4.7 5 6 (6)
Sanguisorba hakusanensis Lilac Squirrel
Sanguisorba hakusanensis 'Lilac Squirrel'
From £14.99
9cm pot
2 litre pot
3 × 9cm pots
3 × 2 litre pots
1 star 1 star 1 star 1 star 1 star 5.0 5 3 (3)
Penstemon Alice Hindley

New

Penstemon 'Alice Hindley'
From £8.99
9cm pot
3 × 9cm pots
6 × 9cm pots
Anemone Frilly Knickers ('Fp007') (PBR)
Anemone Frilly Knickers ('Fp007') (PBR)
From £15.99
9cm pot
3 × 9cm pots
Dierama Blue Belle ('Rowblu') (PBR)
Dierama Blue Belle ('Rowblu') (PBR)
From £12.99
9cm pot
3 × 9cm pots
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Geranium clarkei Kashmir White
Geranium clarkei 'Kashmir White'
From £10.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0.75 star 1 star 1 star 1 star 1 star 4.8 5 5 (5)
Hosta Devon Green
Hosta 'Devon Green'
From £9.99
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star 5.0 5 4 (4)
Hosta Sum and Substance

50% off

Hosta 'Sum and Substance'
From £5.00
9cm pot
3 × 9cm pots
2 litre pot
6 × 9cm pots
+ 1 more available
0 star 0 star 1 star 1 star 1 star 3.0 5 10 (10)
Lindernia grandiflora
Lindernia grandiflora
£7.99
9cm pot
Osteospermum jucundum
Osteospermum jucundum
From £11.99
9cm pot
3 × 9cm pots
0 star 0 star 0 star 1 star 1 star 2.0 5 1 (1)
Penstemon Pensham Laura (Pensham Series)
Penstemon 'Pensham Laura' (Pensham Series)
From £8.99
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star 5.0 5 6 (6)
Salvia Cool Cream (PBR)
Salvia 'Cool Cream' (PBR)
From £10.99
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Salvia Cream Soda

New

Salvia 'Cream Soda'
From £11.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0 star 0 star 1 star 1 star 1 star (1)
Salvia SoCool Pale Blue (PBR)

New

30% off

Salvia 'SoCool Pale Blue' (PBR)
From £7.69
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star (1)
Salvia Oriental Dove ('Dysmau') (PBR)
Salvia Oriental Dove ('Dysmau') (PBR)
From £9.99
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star (4)
Symphyotrichum Coombe Fishacre
Symphyotrichum 'Coombe Fishacre'
From £9.99
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star (1)
Symphyotrichum oblongifolium October Skies
Symphyotrichum oblongifolium 'October Skies'
From £9.99
9cm pot
3 × 9cm pots
6 × 9cm pots
Thalictrum delavayi Hewitt's Double
Thalictrum delavayi 'Hewitt's Double'
From £14.99
9cm pot
2 litre pot
3 × 9cm pots
3 × 2 litre pots
0 star 1 star 1 star 1 star 1 star (3)
Tulbaghia violacea
Tulbaghia violacea
From £12.99
9cm pot
3 × 9cm pots
0 star 0 star 0 star 1 star 1 star (1)
Verbena rigida f. lilacina Polaris

New

Verbena rigida f. lilacina 'Polaris'
From £9.99
9cm pot
3 × 9cm pots
6 × 9cm pots
0 star 0.75 star 1 star 1 star 1 star (3)
Veronicastrum virginicum Adoration
Veronicastrum virginicum 'Adoration'
From £12.99
9cm pot
3 × 9cm pots
0.25 star 1 star 1 star 1 star 1 star (7)
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
Best purple salvia collection

New

Up to 50% off

Best purple salvia collection
From £21.98
1 × collection | 3 plants
3 × collections | 9 plants
Classic cottage alba amethyst combination
Classic cottage alba amethyst combination
From £39.96
4 plants | 1 of each
12 plants | 3 of each
Classic cottage sabani combination
Classic cottage Sabani collection
From £39.96
4 plants | 1 of each
12 plants | 3 of each
Damp shade mini-border collection

40% off

Damp shade mini-border collection
£59.99 £51.99
6 × 9cm plants
Dots & spires plant combination
Dots & spires plant combination
£30.97
3 × plants
Long flowering plant combination (pink, purple and white)
Long-flowering plant combination (pink, purple & white)
£36.96
4 × plants | 1 of each
Nepeta and terracotta pot combination
Crocus collection
Nepeta & terracotta pot combination
£176.96
Sarah's Chelsea pink & lavender combination
Sarah's Chelsea 'pink & lavender combination'
£75.96
4 plants | 1 of each
Sarah's Chelsea pink & lavender combination
Sarah's Chelsea 'pink & lavender combination'
£75.96
4 plants | 1 of each
Structured shade plant combination

Up to 50% off

Structured shade plant combination
£38.96 £29.97
4 × plants | 1 of each
Tom's Chelsea Woodland Sanctuary collection 'Lush shade'
Tom's Chelsea 'Woodland Sanctuary collection 'Lush shade''
From £40.96
4 plants | 1 of each
12 plants | 3 of each
Clematis Broughton Bride
Clematis 'Broughton Bride'
£27.99
2 litre pot | 60cm cane
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 Guernsey Flute ('EviGsy153') (PBR)
Clematis Guernsey Flute ('EviGsy153') (PBR)
£34.99
3 litre pot | 60cm cane
Clematis Reflections ('Evipo035') (PBR)
Clematis Reflections ('Evipo035')
£34.99
3 litre pot | 60cm cane
Clematis Tranquilité ('Evipo111') (PBR) (Boulevard Series)
Clematis Tranquilité ('Evipo111') (PBR) (Boulevard Series)
£32.99
3 litre pot | 60cm cane
Buddleja Bressingham Bountiful

New

Buddleja 'Bressingham Bountiful'
£24.99
2 litre pot
Buddleja davidii Grand Cascade
Buddleja davidii 'Grand Cascade'
£26.99
2 litre pot
1 star 1 star 1 star 1 star 1 star (1)
Buddleja × pikei Unique ('Pmoore12') (PBR)
Buddleja × pikei Unique ('Pmoore12') (PBR)
£24.99
2 litre pot
0 star 1 star 1 star 1 star 1 star (9)
Caryopteris × clandonensis Hint of Gold ('Lisaura') (PBR)
Caryopteris × clandonensis Hint of Gold ('Lisaura') (PBR)
£22.99
2 litre pot
1 star 1 star 1 star 1 star 1 star (1)
Ceanothus Autumnal Blue
Ceanothus 'Autumnal Blue'
From £24.99
2 litre pot
3 × 2 litre pots
0.75 star 1 star 1 star 1 star 1 star (7)
Hibiscus syriacus Gandini Santiago (PBR)
Hibiscus syriacus 'Gandini Santiago' (PBR)
£29.99
2 litre pot
0 star 1 star 1 star 1 star 1 star (1)
Parahebe catarractae Pink Avalanche
Parahebe catarractae 'Pink Avalanche'
£24.99
2 litre pot
1 star 1 star 1 star 1 star 1 star (1)
Syringa meyeri Flowerfesta Pink ('Anny200817') (PBR) (Flowerfesta Series)
Syringa meyeri Flowerfesta Pink ('Anny200817') (PBR) (Flowerfesta Series)
£28.75
3 litre pot
1 star 1 star 1 star 1 star 1 star (1)
Syringa meyeri Flowerfesta White ('Anny200810') (PBR) (Flowerfesta Series)
Syringa meyeri Flowerfesta White ('Anny200810') (PBR) (Flowerfesta Series)
£34.99
3 litre pot
Shades of purple - Allium collection

Best Seller

Save 10% with AUTUMN10

Shades of purple - allium collection
From £26.75
1 × collection | 50 bulbs
2 + 1 FREE collections | 150 bulbs
Hosta collection
Hosta collection
From £19.95
1 × collection | 3 bare roots
2 + 1 FREE collections | 9 bare roots
Hosta sieboldiana var. elegans

50% off

Hosta sieboldiana var. elegans
From £5.00
9cm pot
1 × bare root plant
3 × 9cm pots
3 × bare root plants
+ 3 more available
0.75 star 1 star 1 star 1 star 1 star (4)
Dahlia merckii

New

25% off

Dahlia merckii
From £4.49
approx 10 seeds
1 star 1 star 1 star 1 star 1 star (2)
Papaver rhoeas Mother of Pearl Group

25% off

Papaver rhoeas Mother of Pearl Group
£2.89 £2.17
approx 500 seeds
0 star 1 star 1 star 1 star 1 star (2)
Lathyrus odoratus Noel Sutton

25% off

Lathyrus odoratus 'Noel Sutton'
From £2.24
approx 20 seeds
Cosmos bipinnatus Hummingbird Lilac

25% off

Cosmos bipinnatus 'Hummingbird Lilac'
£3.49 £2.62
approx 40 seeds
Lathyrus odoratus Mollie Rilstone

25% off

Lathyrus odoratus 'Mollie Rilstone'
From £2.47
approx 20 seeds
Lathyrus odoratus Top Hat

25% off

Lathyrus odoratus 'Top Hat'
From £2.24
approx 20 seeds
Papaver somniferum Lilac Pompom

25% off

Papaver somniferum 'Lilac Pompom'
£2.19 £1.64
approx 200 seeds
0 star 0 star 0 star 0 star 1 star (1)
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 (1)
Zinnia elegans Zinderella Lilac

25% off

Zinnia elegans 'Zinderella Lilac'
£4.99 £3.74
approx 20 seeds
1 star 1 star 1 star 1 star 1 star (1)
Bright and bold sweet pea collection

25% off

Bright & bold sweet pea collection
£9.97 £7.48
1 × collection
Aster Duchess Mixed

25% off

Aster 'Duchess Mixed'
£2.49 £1.87
approx 200 seeds
Lathyrus odoratus Spencer Waved Mixed

25% off

Lathyrus odoratus 'Spencer Waved Mixed'
From £2.99
approx 35 seeds
Attracting wildlife seed combination

25% off

Attracting wildlife seed combination
£8.47 £6.35
3 packets of seeds
Mentha pulegium
Mentha pulegium
From £24.99
3 × 9cm pots
0 star 1 star 1 star 1 star 1 star (1)
Mentha spicata

25% off

mint - spearmint
From £2.24
approx 300 seeds
9cm pot
2 + 1 FREE 9cm pots
1 star 1 star 1 star 1 star 1 star (1)
Phalaenopsis Split
Phalaenopsis Split | Orchid
From £26.99
12cm pot | 60cm tall
with silver pot
with white pot
Streptocarpus Betty
Streptocarpus 'Betty'
From £18.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
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 Alexis
Streptocarpus 'Alexis'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Streptocarpus Lemon Sorbet
Streptocarpus 'Lemon Sorbet'
From £16.99
1 × rooted cutting
2 + 1 FREE rooted cuttings
Blue spires and spots mini-border collection
Blue spots and spires mini-border collection
£57.99
available to order from spring 2027
Campanula lactiflora Loddon Anna
Campanula lactiflora 'Loddon Anna'
From £8.99
available to order from summer
0.75 star 1 star 1 star 1 star 1 star (8)
Campanula lactiflora Prichard's Variety
Campanula lactiflora 'Prichard's Variety'
From £8.99
available to order from summer
0.5 star 1 star 1 star 1 star 1 star (10)
Penstemon heterophyllus Heavenly Blue

New

Penstemon heterophyllus 'Heavenly Blue'
From £8.99
available to order from summer
Heavenly Penstemon collection

New

Heavenly Penstemon collection
From £24.27
available to order from summer
Geranium pratense Cloud Nine (PBR)

New

Geranium pratense 'Cloud Nine' (PBR)
From £9.99
available to order from spring 2027
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)
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)
Viola Etain
Viola 'Etain'
From £8.99
available to order from summer
1 star 1 star 1 star 1 star 1 star (1)
Althaea officinalis
Althaea officinalis
From £9.99
sold out
1 star 1 star 1 star 1 star 1 star (1)
Lathyrus latifolius collection
Lathyrus latifolius collection
From £29.99
available to order from spring 2027
Clematis Betty Corning
Clematis 'Betty Corning'
£26.95
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (1)
Clematis Venosa Violacea
Clematis 'Venosa Violacea'
From £14.99
available to order from spring 2027
Clematis Pernille ('Zo09113') (PBR)
Clematis Pernille ('Zo09113') (PBR)
£32.99
available to order from spring 2027
1 star 1 star 1 star 1 star 1 star (1)
Clematis Sacha ('Evipo060') (PBR)
Clematis Sacha ('Evipo060')
£34.99
available to order from spring 2027
0 star 1 star 1 star 1 star 1 star (1)
Corynabutilon × suntense
Corynabutilon × suntense
£49.99
available to order from spring 2027
Hardenbergia violacea
Hardenbergia violacea
£37.99
available to order from spring 2027
Jasminum × stephanense Starry Starry Summer Scent ('Ganmin 1701') (PBR)
Jasminum × stephanense Starry Starry Summer Scent ('Ganmin 1701')
£29.99
available to order from spring 2027
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)
Lavatera falcata Lilia Twirl (PBR)
Lavatera falcata 'Lilia Twirl' (PBR)
£22.99
available to order from spring 2027
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