Astilbe arendsii 'Washington'

Washington False Spirea

A classic Arendsii hybrid astilbe valued for its upright, pure white flower plumes and clean, formal appearance. ‘Washington’ is an excellent choice for brightening shaded borders and woodland gardens, offering dependable early-summer bloom and tidy structure.

Key features



Width: 18–24 in (1.5–2 ft)



Height: 20–30 in (1.7–2.5 ft)



Flower color: Pure white



Bloom time: Early summer



Foliage: Dark green, finely divided, glossy



Form: Upright, clump-forming



Life cycle: Herbaceous perennial



Growing conditions



Sun: Part shade to full shade (morning sun tolerated with adequate moisture)



Soil: Moist, rich, well-drained; prefers humus-rich soils



Water: Moderate to high; soil should remain consistently moist



Hardiness: USDA Zones 4–8



Landscape use



Shade and woodland gardens



Perennial borders



Mass plantings for a crisp, formal look



Along streams and ponds



Containers in shaded locations



Notes



Excellent cut flower



Generally deer resistant



One of the best upright white astilbes



Foliage remains attractive after bloom



Performs best with consistent moisture

Plant type

Perennial

Height

24-30"'

Width

18-24"

Hardiness zones

3–8

Sunlight

Full Sun, Partial Shade

Growth rate

Moderate

Bloom time

Early Summer, Late Spring

Flower color

White

Leaf color

Green

Fall color

Green

Attracts

Butterflies

Soil

Loamy, Well Drained

Landscape use

Container, Mass Planting

Shape

Broad Upright, Clump

Fruit

Yes

Fragrant

Yes

Deer resistant

Yes

Drought tolerant

No