Flat-leaved Eryngium, Blue Eryngo, Flat Sea Holly Eryngium planum - Eryngium intermedium

Detailed Listing For
Botanical Name:

Eryngium planum

Family:

Apiaceae

Genus:

Eryngium

Species:

planum

Common Name:

Flat-leaved Eryngium, Blue Eryngo, Flat Sea Holly

Height:
18-24 inches
Minimum Hardiness Zone:
5

 

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  • Eryngium planum

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Growing Info, follow in order:
Scarification: Soak in water, let stand in water for 24 hours.
Stratification: cold stratify for 30 days.
Germination: sow seed 1/4" deep, tamp the soil, mulch the seed bed.
Other: can be fall sown without stratification.
In a Nutshell:
* A very ornamental plant.
* Established plants are drought tolerant.
* Thistley plants for full sun and poor dry soil, the half-inch flower heads, also like thistles, can be a fine metallic blue or blue purple, flowers in mid to late summer, in rich soil the plants grow too fast and need staking, may make a big clump of stems, native from central Europe to central Asia.
* A good bee plant. more...
Usda description:
More info on http://plants.usda.gov