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False Spiraea (Astilbe x arendsii hybrids)


Family: Saxifragaceae
Genus: Astilbe
Species: x arendsii hybrids
Type: Perennial
Flowering: Early to Late Summer
Zones: 4-9
Light: Full Sun to Partial Shade
Soil: Humus-rich, Moist, Well-Drained
Height: 1.5-4 feet
Propagation: Division in Spring
Colors: Wide Variety (White, Red, Pink, Orange, Purple)
Origin: S.E. Asia

False spiraea can be planted in full sun or shade and tolerates either so long as it receives adequate moisture. The lovely flower plumes range in a variety of shades from purple to red to yellow along with a fern-like foliage that accentuates the attractive blooms. An easy plant to grow, it can become faded after 3-4 years and should be refreshed by dividing and replanting it every few years. If you are looking for a plant that is easily maintained, tolerant of variable light conditions, and attractive long after flowering, false spiraea will fit well into your Iowa garden scheme.

Please note that the Zones listed above are USDA Hardiness Zones and are only given as a rough indication of whether a plant will grow and thrive in your area. Temperature variations and unusual weather conditions can affect plant survival. To assist plant survival during the winter, you may wish to place mulch over the areas in question or plant the flowers in an area away from walls or cement. Additionally, digging up bulbs and roots to overwinter indoors may be preferrable to keeping them in the ground.