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)
Synonym
Sun Exposure
Full Sun
Foliage
Grown for foliage
Height
12-18 in. (30-45 cm)
Spacing
12-15 in. (30-38 cm)
Hardiness
Not Applicable
Danger
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Blue-Violet
Lavender
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Annuals
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Bronze
Where to Grow
Grow outdoors year-round in hardiness zone
Bloom Characteristics
Bloom Size
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
Regional

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

Minneapolis, Minnesota

Water Mill, New York

Claremore, Oklahoma

Fort Worth, Texas

Granbury, Texas

Helotes, Texas

San Antonio, Texas

Spicewood, Texas

Uvalde, Texas

Wylie, Texas

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Featured Videos

Gardener's Notes:

2
positives
0
neutral
0
negative
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B
B
Minneapolis, MN (Zone 4b) | October 2009 | positive

Beautiful purple/violet color. How do you know when the seeds are ready to harvest?

L
NE Medina Co., TX (Zone 8a) | August 2006 | positive

Plant this one in an area where people will not brush up against it as it's quite prickly. A hot sunny area wouldn't be a problem...it se...Read More

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