Search
Sale
Sale: Plants
Shrubs: up to 40% off
Perennials: up to 40% off
Climbers: up to 20% off
Bedding: up to 40% off
Fruit & herbs: up to 40% off
Ferns & grasses: up to 40% off
Trees: up to 20% off
Shop all
Sale: Tools & outdoor living
Tool shed: up to 40% off
Pots & baskets: up to 40% off
Lighting & ornaments: up to 30% off
Outdoor living: up to 30% off
Furniture: up to 40% off
Water features: up to 30% off
Shop all
Sale: By discount
10% off
20% off
30% off
40% off
Up to
40%
OFF
Plants summer sale
Plants
Outdoor plants by type
Perennials
Shrubs
Climbers
Bedding plants
Mature shrubs
Grasses
Roses
Trees
Fruit trees & bushes
Ferns
Pond plants
Shop all outdoor plants
Seasonal plants
New in
Grow your own
Seeds
Geraniums
Salvia
Clematis
Hydrangeas
Fuchsia
Flowers by month
June
July
August
Indoor plants by type
New in
Gifting
Foliage
Flowering
Orchids
Ferns
Terrarium
Palms
Shop all indoor plants
Up to
40%
OFF
Plants summer sale
Grow your own
Fruit
Fruit trees
Apples
Strawberries
Grapes
Cherries
Pears
Plums
Shop all fruit
Vegetables
Heritage
Herbs
Beans
Tomatoes
Chillies & peppers
Carrots
Courgette & marrows
Lettuce
Mushroom
Shop all vegetables
Planting essentials
Plant protection
Potting & propagating
Cold frames & growhouses
Planting kit
Pots
Outdoor pots by type
New in
RHS endorsed
Window boxes & troughs
Raised beds
Wall planters
Hanging baskets & accessories
Grow pots & trays
Bowls
Shop all outdoor pots
Outdoor pots by material
Terracotta
Metal
Glazed
Composite
Wood & rattan
By size
Small (Ø <30cm)
Medium (Ø 30-50cm)
Large (Ø 50-100cm)
Extra large (Ø 100cm+)
Inspiration
Statement pots
Heritage style pots
Handthrown terracotta
Lightweight pots
Plant & pot combinations
Round & tapered
Square & Square
Pot accessories
Plant Stands
Indoor pots
New pots
Plant & pot combinations
Large indoor pots
Hanging pots
Indoor plant bowls
Vases & jugs
Terrariums & accessories
Shop all indoor pots
Tool Shed
Garden equipment
New in
Compost, bark & mulch
Fertilisers & weed control
Composting
Irrigation & watering
Water butts
Clothing & accessories
Garden tidy & storage
Boot room & fireside
Shop all tool shed
Garden tools
New tools
Cutting & pruning tools
Digging
Weeding tools
Bulb planting tools
Tool care and accessories
Potting & propagating
Cold frames & growhouses
Grow pots & trays
Accessories
Shop all potting & propagating
Plant protection
Cloches
Mesh, netting & fleece
Cages & tunnels
Plant support
Plant support & obelisks
Arches & structures
Landscaping
Raised beds
Screening & trellis
Lawn care
RHS approved
Outdoor Living
Outdoor living
New in
Fire pits
Barbecues & pizza ovens
Water features
Furniture
Lounge sets
Dining sets
Shade
Hammocks & swing seats
Garden chairs & loungers
Lighting
Festoon and string lights
Solar lighting
Tealights holders & lanterns
Path & stake lights
Decorative lights
Birdcare & wildlife
Bird feeders
Bird baths & tables
Bird houses
Insects & wildlife
Accessories
Plant stakes & markers
Ornaments
Wind spinners
Clocks & weather instruments
Picnic and games
Shop all accessories
Furniture
RHS AGM
Garden Staples
Shrubs
Perennials
Climbers
Trees
Roses
Conifers
Grasses
Ferns
Hedging
Shop all AGM plants
Grow your own
Fruit
Vegetables
Herbs
Inspiration
For balcony & container gardens
Indoor plants
AGM plants
RHS Gift Cards
Basket
Menu
Shop
Sale
Plants
Grow your own
Pots
Tool shed
Outdoor living
RHS AGM
RHS Gift Cards
Information & Help
Deliveries
Returns
My account
Sign in
Search
Popular searches
Perennials
Flowering
Low Maintenance
Evergreen
Scented
Shrubs
Low Maintenance
Scented
Wildlife Friendly
Hardy
Indoor Plants
Gifting
Flowering
Carnivorous
Indoor Pots
Award Winners
AGM Shrubs
AGM Perennials
AGM Climbers
AGM Indoor Plants
Garden Essentials
RHS Approved
Garden Tools
Clothing
Growhouses
Pots and Containers
Hanging Baskets
Window Boxes
Outdoor Pots
New Ranges
Lighting
Outdoor Lighting
Indoor Lighting
Tealight holders & lanterns
String lights
Trees
Cacti & succulents
Roses
Pots and containers
Indoor plants
Shrubs
Climbers
Roses
Grow your own
Pots and containers
Greenhouse plants
Climbers
Roses
Hanging plants
Ferns
Items
Categories
Suggestions
5 year
plant guarantee
Your purchase supports our charitable work. Thank you!
£2.99 seed only delivery
Basket
Up to 40% off Summer Sale | Save now
RHS Plants Home
Plants
Bulbs
Dahlias
Show all filters
Sort by
Popularity
Availability
Lowest price
Highest price
Name
Show
All items
Available items
Bulbs
Dahlias
Position : Middle of border
Facing
East (2)
South (8)
West (8)
Soil type
Acid (5)
Chalky (7)
Haven't a clue (7)
Heavy clay (7)
Light sandy (7)
Moderately fertile, moist but well-drained soil, or peat-free general purpose compost (1)
Normal (8)
Peat-free general-purpose compost (1)
Flowering month
June (1)
July (8)
August (8)
September (8)
October (8)
Flower colour
Black (1)
Orange (1)
Pink (2)
Red (5)
Yellow (1)
Attractive to wildlife
Attractive to bees (5)
Attractive to butterflies and moths (2)
Attractive to pollinators (4)
Attractive to wildlife (5)
Quick growing
Quite (1)
Yes (8)
Eventual size
Large (6)
Medium (4)
Bulb divisions
Dahlia (Division 1) Single-flowered (3)
Dahlia (Division 14) Paeony-flowered (2)
Dahlia (Division 2) Anemone-flowered (1)
Dahlia (Division 8) Cactus (1)
Dahlia (Division 9) Semi cactus (2)
Sale
All offers (4)
Perennials (4)
Hardy
No (1)
Semi (8)
Leaf colour
Bronze (3)
Green (5)
Purple (2)
Dahlias
Results found: 8
Dahlia merckii
From £5.99
View options
approx 10 seeds
£5.99
9cm pot
£8.99
3 × 9cm pots
£21.99
6 × 9cm pots
£34.99
1 × tuber
£6.99
2 litre pot
£17.99
2 + 1 FREE 2 litre pots
£35.98
View details
Dahlia
'Bishop of Llandaff'
From £4.99
View options
3 litre pot
£17.99
2 + 1 FREE 3 litre pots
£35.98
1 × tuber
£4.99
3 × tubers
£12.50
6 × tubers
£24.00
View details
Dahlia
'Chat Noir'
From £5.29
View options
3 litre pot
£17.99
1 × tuber
£5.29
3 × tubers
£12.75
View details
20% off
Dahlia
'Tamburo'
From £5.49
View options
3 litre pot
£14.39
2 + 1 FREE 3 litre pots
£28.78
1 × tuber
£5.49
3 × tuber
£14.00
View details
Dahlia
'Moonfire'
From £5.49
View options
2 litre pot
£17.99
2 + 1 FREE 3 litre pots
£35.98
1 × tuber
£5.49
3 × tubers
£14.00
View details
20% off
Dahlia
'Soulman'
From £5.49
View options
3 litre pot
£14.39
1 × tuber
£5.49
3 × tubers
£15.00
View details
20% off
Dahlia
'Bishop of Leicester'
From £5.49
View options
3 litre pot
£14.39
2 + 1 FREE 3 litre pots
£28.78
1 × tuber
£5.49
3 × tubers
£14.00
View details
30% off
Dahlia
'Mexican Star'
From £5.49
View options
3 litre pot
£12.59
2 + 1 FREE 3 litre pots
£25.19
1 × tuber
£5.49
3 × tubers
£14.00
View details
was added to your wheelbarrow
Become an RHS Member today and save 25% on your first year
Join now
