Astilbe x arendsii ‘Irrlicht’

(Astilbe 'Irrlicht')


Hardiness Zones:

 3a  3b  4a  4b  5a  5b  6a  6b  7a  7b  8a  8b

Quick Overview:

‘Irrlicht’ is a white-flowered cultivar that typically grows to 24" tall and to 18" wide. It features an attractive foliage mound of compound, dark green leaves (each to 15" tall) with sharply-toothed leaflets. Tiny, slightly fragrant, white flowers in airy, erect to arching, densely packed branched panicles bloom above the foliage on slender, upright stems from late spring to mid-summer (May-July).

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Easily grown in average, medium moisture, 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. Removing faded flower stalks will not prolong bloom but may improve plant appearance, particularly if a ground cover look is desired. On the other hand, many gardeners leave the flower stalks in place after bloom because of the continuing ornamental interest of the dried seed heads. Divide clumps when overcrowding occurs (every 3-4 years).

Additional information

Common Name

Astilbe 'Irrlicht'

Botanical Name

Astilbe x arendsii 'Irrlicht'


1 gallon

Evergreen or Deciduous


Hardiness Zone

3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b

Growth Rate


Light Requirements

Part-shade, Part-sun, Shade


to 2 ft.


1.5 ft.

Soil Condition


Water Needs


Blooming Period

May to June

Flower Color




Foliage Color

Emerald green

Deer Resistant


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