Culver's Root

Viburnum farreri

Native to:
China

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Viburnaceae
Genus:
Viburnum
Species:
Viburnum farreri
USDA Symbol:
VIFA4

Growth Characteristics

Height:
300 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
feb,mar,apr
Bloom Colors:
white, pink
Landscaping Shrub:
Yes

Keystone Species Ranking

Caterpillar Keystone:
★★★★★ Butterfly & moth species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
birds
Deer Resistant:
Yes
Fragrant:
Yes
Fall Color:
red, purple

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
native to forest edges and slopes

Propagation & Germination

Stratification:
Warm then cold/moist stratification (double dormancy) — 150–270 days
Germination Time:
30–365 days
Notes:
Viburnum seeds exhibit double dormancy requiring warm then cold stratification. Germination can be erratic and may take up to two years.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Expose to fluctuating outdoor winter temps incl. freezing for 3 months. Increase light/temp in spring. Pulpy coat -- soak & rinse daily 7 days to remove.

Source: Ontario Rock Garden & Hardy Plant Society