Western Water Hemlock

Cicutadouglasii

Family
Apiaceae (ay-pee-AY-see-ee)
Genus
Cicuta (sik-YOO-tuh)
Species
douglasii (dug-LUS-ee-eye)
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Grown for foliage
Height
36-48 in. (90-120 cm)
Spacing
6-9 in. (15-22 cm)
Hardiness
USDA Zone 2b: to -42.7 °C (-45 °F)
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
Danger
All parts of plant are poisonous if ingested
Bloom Color
White/Near White
Bloom Time
Mid Summer
Other Details
Category
Biennials
Water Requirements
Foliage Color
Blue-Green
Where to Grow
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
Plant is viviparous
Seed Collecting
Wear gloves to protect hands when handling seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

This plant is said to grow outdoors in the following regions:

Merced, California

Isle, Minnesota

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Gardener's Notes:

0
positive
1
neutral
0
negative
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Benton, KY (Zone 7a) | February 2005 | neutral

The swollen bases of the stems and unusually thick roots have horizontal chambers inside, a feature that helps identify this deadly poiso...Read More

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