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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
description:
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.

cultivation:
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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