Astilbe × arendsii 'Bergkrystall' (False Goat's Beard) — Clump-forming, upright plumes above a mound of foliage

Overview

Astilbe × arendsii 'Bergkrystall' is a clump-forming, upright plumes above a mound of foliage perennial in the genus Astilbe, part of the Saxifragaceae family, with deciduous; deeply divided and toothed, often bronze-tinted when young foliage. Astilbe × arendsii 'Bergkrystall' grows best in partial shade; full sun only where the soil stays reliably wet, and tolerates fertile loam or clay enriched with organic matter soils and neutral to slightly acid pH. Its UK hardiness is rated H7. Suggested uses include suitable for shaded borders, woodland gardens, and alongside ponds or streams where soil remains moist. also effective as ground cover in damp and shady areas..

About

Astilbe × arendsii 'Bergkrystall' is a perennial in the Saxifragaceae with upright, feathery flower plumes above a mound of deeply divided, toothed leaves. The foliage is deciduous and often bronze-tinted when young. It flowers June to August. It prefers partial shade and reliably moist to boggy soil and will not tolerate drought.

About the genus

Astilbe is a genus of 18 species of rhizomatous flowering plants within the family Saxifragaceae, native to mountain ravines and woodlands in Asia and North America. Some species are known by the common names false goat's beard and false spirea.

Wikipedia contributors, "Astilbe", CC BY-SA 4.0 — Astilbe

In the garden

Astilbe × arendsii 'Bergkrystall' is a clump-forming perennial in the Saxifragaceae, carrying upright plumes of flowers above a mound of deeply divided, toothed foliage. The leaves are deciduous and often show a bronze tint when young, providing a clear seasonal change in the border. Plant where light is filtered or limited: partial shade is ideal, and full sun suits it only if the soil remains reliably wet through the season. It favours fertile loam or clay that has been enriched with organic matter and performs best on neutral to slightly acid soils. Aspect should be north, east or west-facing with a sheltered exposure to reduce stress on the shoots and flower plumes. Hardiness rating H7 indicates it is fully hardy in UK gardens. Keep planting sites reliably moist to boggy, as this cultivar will not tolerate drought; use the damp margins of ponds, streams or shaded, moisture-retentive borders. It fits shaded mixed borders, woodland-style beds and pond-side plantings, and can be used as ground cover in consistently damp, shady spots. Expect airy, upright flower plumes from June to August rising above the bronze-tinted young leaves.

Growing conditions

Best soil and position for Astilbe

Sunlight: Partial shade; full sun only where the soil stays reliably wet
Soil type: Fertile loam or clay enriched with organic matter
Soil pH: Neutral to slightly acid
Soil moisture: Reliably moist to boggy; will not tolerate drought
Aspect: North, east or west facing
Exposure: Sheltered
UK hardiness: H7

Plant details

Astilbe × arendsii 'Bergkrystall' size, habit and characteristics

Plant type: Perennial
Habit: Clump-forming, upright plumes above a mound of foliage
Foliage: Deciduous; deeply divided and toothed, often bronze-tinted when young
Suggested uses: Suitable for shaded borders, woodland gardens, and alongside ponds or streams where soil remains moist. Also effective as ground cover in damp, shady areas.

Care notes

Pruning and caring for Astilbe × arendsii 'Bergkrystall'

Cultivation: Moisture is everything - an astilbe that dries out scorches at the leaf margins and the plumes shrivel before they open. Plant in ground improved with plenty of organic matter, mulch generously each spring, and site out of hot afternoon sun unless the soil is genuinely wet. They are excellent in the damp shade where little else thrives.
Pruning: No pruning needed. Leave the spent plumes standing for winter structure and cut the whole clump down in late winter before new growth begins.
Propagation: Divide congested crowns in early spring; the woody rootstock may need a spade or a saw. Species can be raised from seed but cultivars will not come true.
Pest resistance: Largely trouble-free, though vine weevil grubs attack the roots of container plants.
Disease resistance: Healthy in suitable conditions. Powdery mildew appears on plants under drought stress, which is a symptom of the wrong site rather than of disease pressure.

Frequently asked questions

How do I grow Astilbe × arendsii 'Bergkrystall'?

Moisture is everything - an astilbe that dries out scorches at the leaf margins and the plumes shrivel before they open. Plant in ground improved with plenty of organic matter, mulch generously each spring, and site out of hot afternoon sun unless the soil is genuinely wet. They are excellent in the damp shade where little else thrives.

Where is the best place to plant Astilbe × arendsii 'Bergkrystall'?

Astilbe × arendsii 'Bergkrystall' prefers partial shade; full sun only where the soil stays reliably wet. It suits sheltered positions.

What soil does Astilbe × arendsii 'Bergkrystall' need?

Astilbe × arendsii 'Bergkrystall' grows best in fertile loam or clay enriched with organic matter soil. It prefers neutral to slightly acid soil. Aim for soil that stays reliably moist to boggy; will not tolerate drought.

How do I prune Astilbe × arendsii 'Bergkrystall'?

No pruning needed. Leave the spent plumes standing for winter structure and cut the whole clump down in late winter before new growth begins.

Is Astilbe × arendsii 'Bergkrystall' hardy in the UK?

Astilbe × arendsii 'Bergkrystall' has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.

How do I propagate Astilbe × arendsii 'Bergkrystall'?

Divide congested crowns in early spring; the woody rootstock may need a spade or a saw. Species can be raised from seed but cultivars will not come true.

More in the Astilbe genus

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