Prefers semi-shaded sites will tolerate more light if the soil is kept moist.
Needs moist soil. Plants growing in dry conditions will be small, few blooms and tend to dry up during the hotter days in the summer. The Astilbe chinensis tend to be a bit more forgiving when it comes to drier conditions
Soil & Site
rich, humusy moist well-drained soils
ternately compound with coarsely serrated leaflets, dissected foliage is an attractive feature of the plant
1.5-2 feet tall, space 16-18 inches
Division of the clumps every 2-3 years will help to maintain the vigor of the plant. Astilbe are heavy feeders and need to be fertilized every year in the spring and also in the early fall. Some of my Astilbe tend to heave in the winter. In the spring I cover the exposed roots with soil, mulch or dug them in.
I have grown Astilbe in a 1/2 to 3/4 day sunspot for over 10 years and they are a showstopper when blooming. To achieve this they are growing in a bed that is raised a few inches and the soil is naturally constantly wet