Western Water Hemlock

Cicuta douglasii

Native to:
Canada, Mexico, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Apiaceae
Genus:
Cicuta
Species:
Cicuta douglasii
USDA Symbol:
CIDO

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
200 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
jun,jul,aug
Bloom Colors:
white

Wildlife Benefits

Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Host Plant for Caterpillars

Depressaria daucella, Black Swallowtail (Papilio polyxenes)

Garden & Ecology Notes

Deer Resistant:
Yes

Soil Requirements

Soil Type:
rich, moisture-retentive clay or loam
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
often found in wet meadows and marshes

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–42 days
Notes:
Seeds require cold stratification and moist conditions. Germination can be erratic.

The above propagation data sourced from Claude AI