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botanical name:
Eryngium bourgatii
Eryngium bourgatii © Deeproot Plant Base
common name:  Sea Holly
family:  Apiaceae
characteristics: perennial
height: 0.45m
width: 0.30m
growth rate: medium
growth habit: clump
leaf colour: dark green
flower colour: blue-grey
stem/bark: blue
main season: Summer
aspect: full sun
conditions: dry soil, moist soil, sandy soil, coastal
preferred soil pH: alkaline
minimum temp: -23°C
USDA zone: 6 to 9
Clump-forming, tap-rooted perennial with pinnatifid, spiny, silver veined, dark-green basal leaves. Branching blue stems carry blue or grey-green, small thistle-like flowers with bluish-silver bracts, in mid and late summer.

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

From seed or root cuttings. Also by division but this can be tricky.

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