Dahlias are half hardy, so keep them protected from frost. Pot tubers individually between February and April and grow them on in a greenhouse or bright indoor position. Alternatively, start them outside in May, once the risk of frost has passed.
Out of season
New
Dahlia
'Flaming Denmark'
A little fire in the flower border can be a wonderful thing, and Dahlia 'Flaming Denmark' certainly knows how to provide it. Its lively blooms combine scarlet red, glowing orange and flashes of golden yellow, with irregular streaks that make every flower slightly different. The broad outer petals are beautifully flamed, while a busy gathering of smaller, narrower petals surrounds the darker centre, giving the flowers an unusually intricate, almost ruffled appearance. Some petals carry bold yellow markings, while others remain predominantly red, creating a delightful sense of movement even on the stillest summer day. Dahlia 'Flaming Denmark' has a wonderfully spirited character, with flowers that look particularly luminous when the afternoon sunshine catches their contrasting colours.
For a border full of warmth and personality, combine Dahlia 'Flaming Denmark' with purple salvias, airy grasses and softer apricot flowers. Its distinctive colouring also works beautifully among deep green foliage, where the fiery petals have plenty of room to shine. Give Dahlia 'Flaming Denmark' a sunny, sheltered position in fertile, well-drained soil, watering during dry spells and removing faded blooms to encourage fresh flowers throughout summer and autumn. A little support may be useful as the flowering stems develop. Start the tubers under cover in spring, or plant outside once the danger of frost has passed, lifting them for frost-free storage in colder UK gardens. With Dahlia 'Flaming Denmark', the summer garden gets a lively little spark of colour.
Quantity
Plant profile
Plant calendar
For planting out later, use a snug-fitting 15–20cm pot filled with peat-free multipurpose compost. For a patio display, plant directly into a container at least 30cm wide and keep it somewhere bright and frost free until it can move outdoors.
Position the old stem facing upwards, with the tubers covered and the stem stump level with the compost. Tubers naturally vary in size and shape and may arrive without visible buds. Bent necks are usually fine if they remain firmly attached, so do not remove them.
Water after planting, then allow the compost to become almost dry before watering again while the tuber remains dormant. Once shoots and leaves are growing strongly, water more regularly, always allowing excess water to drain away.
Plant out after the last frost, once the plant is around 20–30cm tall and its roots hold the compost together. Space dahlias approximately 30–50cm apart in borders, allowing less room for compact varieties. Water thoroughly after planting.
Water regularly during active growth and deadhead or cut flowers often. Dahlias usually bloom from July or August until the first frost, although later-planted tubers may start in late August or September. In autumn, lift, clean and dry the tubers, then store them somewhere cool, dry, airy and frost free.
- Botanical name
- Dahlia 'Flaming Denmark'
- Flower colour
- Red, yellow
- Tuber size
- 1
- Established height
- 70cm-1m
- Established spread
- 30-50cm
- Growing skill
- Easy to grow
- Habit
- Upright
- Hardiness
- Half hardy
- Leaf colour
- Green
- Mouse resistant
- No
- Plant spacing
- 5 tubers per m2
- Pollinator friendly
- Yes
- Position
- Sheltered
- Rabbit resistant
- No
- RHS Award (AGM)
- Yes
- Scented
- No
- Soil acidity
- Any
- Soil moisture
- Free draining
- Soil type
-
Loam
Sandy
Multipurpose compost
Loam-based compost - Suitable for
-
Large containers
Borders
Gravel gardens
Coastal gardens
Cottage gardens
Low maintenance gardens
Cut flower gardens - Sunlight
-
Full sun
Partial shade - Toxicity
- No report
- Years to establish
- 1st year
Good for cutting
Thrives in full sun
Perennial
Farmer Gracy exclusive
Packed in paper
Low maintenance
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