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botanical name:
Dahlia merckii
Dahlia merckii © Deeproot Plant Base
family:  Asteraceae
characteristics: perennial
height: 2.00m
width: 1.00m
growth rate: medium
growth habit: bushy
leaf colour: green
flower colour: mauve
main season: Summer
aspect: full sun
conditions: moist soil
preferred soil pH: neutral
minimum temp: -6°C
USDA zone: 9 to 10
Species dahlia, a tuberous perennial with branching stems and pinnate mid-green leaves, up to 40cm. long. Single flowerheads of purple, pink or white with yellow central disc florets, usually borne on long arching stalks, in summer and autumn.

Moist, but not waterlogged, fertile medium to heavy loam, preferably neutral or very slightly acid. Sunny position. In cool areas, lift tubers in late autumn and overwinter in a frost-free place.

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