Sun and Shade Astilbe perform best in partial shade, but they will also grow in full shade. In cool, northern climates, most astilbe varieties will tolerate full day sun. Zone Astilbes are winter hardy in zones 3-8. When to Plant Astilbes should be planted in spring, when the soil is cool and moist.

How many hours of sun can astilbe tolerate?

If astilbe receives 4 to 6 hours of sun a day, it will put on its wonderful flowered show. If planted in deep shade it will still fill your garden with lovely foliage, but few flowers.

Can astilbe tolerate the afternoon sun?

When & Where to Plant Astilbe Light: Astible grows best in part shade. It can thrive in full sun, but will need shade in the afternoon in hot summer climates. In full shade, flowering will be reduced. Soil: Astilbe thrives in moist, well-drained soil that has a slightly acidic pH (6.0).