Dahlia Unwins Mix 25 Seeds

An early dwarf dahlia with double and semi double flowers in a wide colour range. An excellent item for mass bedding.

Garden Height: 50cm
Ideal for: Pots and Bedding

How to Grow Dahlia

Dahlia can be grown from either seed or tubers. If growing from tubers then plant with the eye towards the surface at a depth of about 15 cm (after the last frost of spring); the seeds of Dahlia should be lightly covered once sown (before the last frost of spring).

Ideally Dahlia should be planted into an area of the garden that is sunny; spacing depends on variety, small (30 cm), medium (45 cm), large (65 cm). They like a soil that is of pH6 to 7.5, and that is enhanced by the addition of bone meal and humus, and low in nitrogen.

Seedlings of Dahlia can first be grown indoors for later transplanting. They should be started about 10 weeks before they are due to be put outside in the middle of spring. They normally takes from one to three weeks to germinate in individual pots at about 18°C.

Quick Dahlia Growing Guide and Facts

Common Names: Dahlia.
Life Cycle: Half hardy perennial usually grown as a hardy annual by gardeners.
Height: 12 to 60 inches (30 to 180 cm).
Native: South and Central America.
Flowers: Summer to first frost.
Flower Details: Purple, violet, yellow, red, pink, white. May have large flowers. Often have double flower heads.
Foliage: Blue-green. Ovate. Serrated.
Sow Outside: Tubers: plant about 6 or 7 inches (15 to 18 cm) deep with the eye at the top following the last frost. Seed: Cover seeds. Two weeks before last frost. Spacing: small species: 12 inches (30 cm); larger species 20 to 36 inches (50 to 90 cm).
Sow Inside: Pots. Germination time: one to three weeks. Temperature 68°F (20°C), ten weeks in advance. Transplant outdoors in mid spring, well after any chance of frost.
Requirements: Full sunlight. Soil pH 6 to 7.5. Deep soil. Humus rich. Add bone meal. Low nitrogen. Provide support. Occasional feed with bone meal. Pinch tips. Deadhead. Bring tubers indoors for the winter in areas of frost. Propagate: dividing in autumn.


SKU FDahUn25
Shipping Weight 0.1000kg
Shipping Width 0.140m
Shipping Height 0.010m
Shipping Length 0.220m
Unit Of Measure ea

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