Dahlia 'Arthur Hambley' – (Decorative)

1 tuber
£4.69
£4.69 each
3 tubers
£8.69
£2.90 each
Save 38%
6 tubers
£13.89
£2.32 each
Save 51%

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Go big or go home. This isn't just a flower; it's a statement. With blooms the size of dinner plates (literally 25cm+ wide), 'Arthur Hambley' is the garden equivalent of a mic drop—one stem is all you need to stop traffic.

Dahlia ‘Arthur Hambley’ is a classic Giant Decorative variety, boasting enormous lavender-pink blooms that command attention in any garden border or floral display.

Standing tall at around 120cm, this robust variety produces huge, fully double flowers that can exceed 25cm in diameter. The petals are broad and slightly curved, creating a lush, full shape with a soft, silvery sheen that glows in the evening light.

Plant in full sun to maximise flowering potential, ensuring the soil is free-draining and enriched with organic matter. Due to the sheer weight of the blooms, robust staking is required from the moment of planting to prevent wind damage.

Keep the soil consistently moist but not waterlogged, and pinch out the growing tips in early summer to promote bushier growth and more flowering stems. Feed regularly with tomato fertiliser to fuel the production of its giant blooms.

Perfect for the back of the border, ‘Arthur Hambley’ creates a stunning backdrop for lower-growing perennials. Its long, strong stems make it an exceptional cut flower, where just a single stem can make a dramatic statement in a vase.

Botanical name Dahlia 'Arthur Hambley'
Flower colour Lavender-pink
Tuber size Grade I (Top Size)
Established height 110–120 cm
Established spread 60–75 cm
Plant spacing 3 per m²
Leaf colour Green
Habit Upright, Bushy
Life cycle Perennial (Tender)
Hardiness Half hardy (Lift in winter)
Years to establish 1st year
Sunlight Full sun
Position Sheltered
Suitable for Back of borders, Cutting garden, Exhibition
Soil acidity Neutral to slightly acidic
Soil moisture Moist but well-drained
Soil type Loam, Sand, Clay (enriched)
RHS Award (AGM) Yes
Growing skill Easy to grow
Pollinator-friendly No (Double flowers)
Deer resistant No

Where to Plant:

Select a spot in full sun at the back of a border where the soil is fertile and free-draining. Because of its height and giant blooms, a sheltered location is essential to prevent wind damage to the heavy stems.

How to Plant:

Plant tubers 10–15cm deep after the last frost. Space them at least 60–75cm apart to allow for their large size. It is critical to insert a strong stake at the time of planting to support the weight of the giant flowers as they develop.

Aftercare:

Tie the stems to the stake as they grow. Pinch out the growing tip when the plant is 40cm tall to promote bushiness. Feed generously with tomato feed during summer. Lift tubers in late autumn to overwinter in a dry, frost-free place.

Planting and Flowering Calendar

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Key Features

Packed in paper

Packed peat-free

Great for Shade

RHS Award (AGM)

Good for cutting

£4.69

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