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Astilbe simplicifolia ‘Key Biscayne’

Astilbe simplicifolia ‘Key Biscayne’ is a hybrid with deep, rose-pink plumes of flowers on 16″ tall, dark reddish stems over glossy, mid-green foliage with a dark red edge. It blooms in late spring to early summer with some frequent late summer rebloom and stays attractive even as the flowers fade. Plants form compact mounds that look good even without flowers.

Open, airy panicles of star-like flowers are followed by ornamental seed heads, which provide a few additional months of interest. ‘Key Biscayne’ is excellent for moisture retentive containers or in the garden at the front of borders. Slower to establish than A. arendsii, requiring about 3 years to reach maturity.


# Description Qty per Unit Units Available Price/Unit
AB402 Astilbe simplicifolia 'Key Biscayne' out of stock $0.00

Plant Details +

Size 2-3 eye
Height 14-16"
Spacing 12"
Hardiness Zones 4-8
Exposure Light Shade to Filtered Sun
Foliage Mid-Green with a Dark Red Edged Foliage
Flower Deep, Rose-Pink Flowers
Bloomtime Late Spring to Early Summer

General Information +

Botanical: Astilbe x simplicifolia 'Key Biscayne'

Common: Astilbe

Family: Saxifragaceae

General Characteristics: Wait to cut back the old foliage until spring; it will help protect the plant from winter damage. In the spring, if the crown has risen above soil level, gently press it back into the ground and apply some organic matter around the plant. Plants should be divided in early spring every 3-4 years to maintain vigor. Prefers moist soil but not waterlogged. Keep well-watered. Just give them a drink every once in a while and they will grow healthy and strong.

Use: Accent, Good Texture/Form, Border, Containers, Cut Flower, Massed, Specimen, Waterside and Woodland.

Planting/Care Instructions +

Pests or Diseases: No serious insect or disease problems.

Planting Instructions: May be planted in any well-drained soil. Dig a hole large enough to encompass the roots without bending or circling. Set the plant in place so the crown (part of the plant where the root meets the stem) is about 1-2 inches below the soil surface. Cover with soil to the original soil surface and water thoroughly. Easily grown in average, medium, well-drained soils in part shade to full shade. Prefers moist, humusy, organically rich soils. Soils must not be allowed to dry out. If regularly watered, foliage will usually remain attractive throughout the growing season. A summer compost mulch helps retain soil moisture. Many gardeners leave the flower stalks in place after bloom because of the continuing ornamental interest of the dried seed heads. Astilbes are mainstays of shade and woodland gardens.