Eryngium Species, Leavenworth's Eryngo, Sea Holly, Purple Button-Willow
Eryngiumleavenworthii

Family: Apiaceae (ay-pee-AY-see-ee)
Genus: Eryngium (er-RIN-jee-um)
Species: leavenworthii (lev-en-WER-thee-eye)

Category
Annuals

Water Requirements
Drought-tolerant; suitable for xeriscaping

Sun Exposure
Full Sun

Foliage
Grown for foliage

Foliage Color
Bronze

Height
12-18 in. (30-45 cm)

Spacing
12-15 in. (30-38 cm)

Hardiness
Not Applicable

Where to Grow
Grow outdoors year-round in hardiness zone

Danger
Plant has spines or sharp edges; use extreme caution when handling

Bloom Color
Blue-Violet
Lavender

Bloom Characteristics

Bloom Size

Bloom Time
Mid Summer
Late Summer/Early Fall

Other details

Soil pH requirements
7.6 to 7.8 (mildly alkaline)

Patent Information
Non-patented

Propagation Methods
From seed; direct sow outdoors in fall
From seed; direct sow after last frost

Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Wear gloves to protect hands when handling seeds