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botanical name:
Hydrangea macrophylla 'Renate Steiniger'
Hydrangea macrophylla 'Renate Steiniger' © Deeproot Plant Base
family:  Hydrangeaceae
characteristics: shrub
height: 2.00m
width: 2.50m
growth rate: medium
growth habit: bushy
leaf colour: green
flower colour: blue
main season: Summer
aspect: full sun, part shade, shade
conditions: moist soil, coastal
preferred soil pH: any
minimum temp: -23°C
USDA zone: 6 to 9
description:
Hortensia variety with large mophead flowers, usually a strong blue, ageing to green and red shades. Flower colour is bluer on acid soils, violet or mauve in more alkaline conditions.

cultivation:
Moist, well drained, reasonably fertile, humus-rich soil. Sun or part shade, preferably with shelter from cold, drying winds. May become chlorotic on very shallow chalky soil. Performs well in seaside locations.
The flower colour is influenced by the soil pH; acid soil, with a pH of less than 5.5, will generally produce blue flowers. A pH above this tends to produce pinker flowers.
Prune stems to a strong bud in spring.

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