WSU Clark County Extension
PNW Plants Searchable, categorized images

Blue Cap Sea Holly

Scientific name: Eryngium planum 'Blue Cap'
Taxonomy
Family:Apiaceae
Type:Evergreen shrubs
Native:NO
Plant Requirements
Zone:2 to 9
Sun:Full sun
Moisture:Dry
Plant Characteristics
Height:2 ft
Width:2 ft
Bloom:Summer flowers
Bloom Time:June to August
Bloom Color:Blue
Additional Characteristics
Trees


Fruit

Leaves


Bark
Wildlife value

Poisonous
Description With its thistle like vibrant blue flower heads, Sea Holly is a favorite for the flower arranger looking for either fresh or dried selection. This cultivar is called Blaukappe in European markets.

  Morphology:
This is an evergreen perennial that grows to 2’ in height and width. It tends to become a clump forming plant bearing spiny blue tinted stem flowers held above the foliage below. The leaves are green, scalloped and heart shaped.
The flowers are attractive to butterflies.

  Adaptation:
Se Holly is an easy care perennial in that it can tolerate hot dry sites, as it sends down a deep tap root.

  Pests:
Pest free.
For assistance, contact Dr. Charles Brun (brunc@wsu.edu), (360) 397-6060 5701
Computing and Web Resources, PO Box 6234, Washington State University, Pullman WA 99164-6234