Eryngium Species, Rattlesnake Master, Eryngo, Snakeroot, Sea Holly
Eryngiumaquaticum

Synonym:Eryngium plukenetii

Synonym:Eryngium praealtum

Synonym:Eryngium virginianum

Category
Biennials
Perennials

Water Requirements
Requires consistently moist soil; do not let dry out between waterings

Sun Exposure
Sun to Partial Shade

Foliage

Foliage Color

Height
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

Spacing

Hardiness
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)

Where to Grow

Danger
N/A

Bloom Color
Lavender
White/Near White
Silver/Gray

Bloom Characteristics
Flowers are good for drying and preserving
This plant is attractive to bees, butterflies and/or birds

Bloom Size

Bloom Time
Late Summer/Early Fall
Mid Fall

Other details

Soil pH requirements

Patent Information

Propagation Methods

Seed Collecting