1.Shop for astilbe in spring and early summer. Plants are usually sold in 6-inch and gallon-sized containers at nurseries.
2.Choose healthy plants with many stems growing from the soil.
3.Plant astilbe in a shady place in the garden.
4.Loosen a pot-bound plant by dragging a hand cultivator - a tool that looks like a claw - down the sides of the root ball.
5.Add a light application of organic fertilizer to the planting hole.
6.Set plants no deeper than they were growing in the container.
7.Place plants 2 feet apart.
8.Mulch by adding a 2- to 3-inch layer of compost around the plant.
9.Water well after planting - until the soil is completely wet.
Caring for Astilbe
10.Cut old stems to ground level in early spring. Use bypass pruners for this task.
11.Make sure the area does not dry out; lay a soaker or leaky hose around the plants.
12.Add a light application of organic fertilizer to the top of the soil in early spring; follow directions on the package.
13.Water deeply - until the soil is saturated - once a week in dry summers.
14.Mulch in spring with a 2- to 3-inch layer of compost around but not on top of the plant.
Astilbe looks wonderful planted in groups of 3 to 5 plants.
This plant grows in zones 5 through 8 of the U.S.D.A. Plant Hardiness Zone Map.