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
Dahlia
'Striped Nagano'
Every planting scheme should have an element of fun, and what better way to introduce it than with a perky patch of Dahlia 'Striped Nagano'? This funky dahlia will give you an abundance of fabulous water-lily shaped blooms that stand out with their lively colours and arty brushwork. An enticing combination of marmalade orange dabbed and flecked with strokes of cherry red, and then softened with a touch of creamy white at the tips. Each flower of Dahlia 'Striped Nagano' appears to be painted in its own unique way, so when massed together they create a picture of great depth and interest. This can look stunning both in a garden setting and in a bouquet, lending both a touch of flair and originality.
Dahlia 'Striped Nagano' makes a good-sized plant, reaching up to 1.2m in height, and produces masses of blooms over a long period from summer to the first frosts. Regular deadheading will encourage yet more of these fabulous blooms to emerge. It is perfectly suited to regular cutting, with good, strong stems and a nice-sized flower (around 15cm wide) for a bouquet. Pinching out the growing tips is another useful technique that will create bushier plants and encourage multiple side-shoots and more flowers to emerge. 'Striped Nagano' dahlias are great-value plants which will keep on giving and performing splendidly in their ideal growing conditions, so give them a sunny spot with good soil and regular watering, and you’ll reap the rewards of many weeks 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 'Striped Nagano'
- Flower colour
- Orange, red, cream
- Tuber size
- 1
- Established height
- 50-70m
- 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
- No
- Position
- Sheltered
- Rabbit resistant
- No
- 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
Packed in paper
Low maintenance
Top-size tubers
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