Astilbe 'MAINZ' astilbe (japonica group)
size/type
low perennial,mid-sized perennial
usual height
0,4-0,5m
usual width
0,3-0,5m
leaves
deciduous broadleaf
colour of leaves
flowers
showy
colour of flowers
blooming time
June-July
location
semi-shade to shade
soil type
any (acidic to alkaline)
soil moisture requirements
evenly moist (dislikes drought)
USDA zone (lowest)
4 (down to -34°C)
winter protection
for zone 5+6
for zone 7
categorized
Description of the plant:
Mainz is a japonica hybrid astilbe from 1952. Its flowers are cotton-candy-like pink plumes atop almost 50 cm tall stems and bloom from late June. Leaves are dark green, divided, heavily serrated at margins, healthy, and glossy. Grow astilbe in humus-rich soil. If planted in boggy or regularly watered bed they can sit in full sun, too, otherwise choose a semi-shaded or shaded location. They are water loving plants and require a good dose of nutrients to look their best. They will not grow in chalky or clay soil that dries out in summer.
For best results divide the clumps every 3-4 years removing old and dead rhizomes in early spring. Also in the spring remove old leaves and last year’s flowers. If grown in poor soil you may need to cut back the entire plant after flowering to get rid of spent stems and tired foliage in order to encourage growth of new leaves. A dose of a liquid fertilizer is recommended. Fully hardy to about -34°C (USDA zone 4).
Last update 08-06-2022
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