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botanical name:
Eryngium caeruleum
Eryngium caeruleum © Deeproot Plant Base
synonyms:  Eryngium biebersteinianum, Eryngium caucasicum
family:  Apiaceae
characteristics: perennial, evergreen
height: 0.90m
width: 0.60m
growth rate: medium
growth habit: clump
leaf colour: blue-green
flower colour: light blue
stem/bark: blue-green
main season: Summer
aspect: full sun
conditions: dry soil, sandy soil, coastal
preferred soil pH: alkaline
minimum temp: -35°C
USDA zone: 4 to 9
Clump-forming prickly evergreen. Tall stiff branching stems of small rounded, steely light blue flowers with spiky blue-green bracts in July and August. Bluish green leaves and stems. Similar to Eryngium planum.

Well drained, poor to moderately fertile soil in full sun. Avoid excessive winter wet. Drought tolerant.

other notes:
Native to the Caucasus and Central Asia.
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