Eryngium horridum (Pineapple eryngium)
Other names: Pineapple sea holly
E. horridum is a rosette-forming, evergreen perennial with long, linear, softly-spined, mid-green leaves and branching stems bearing white to pale green, spherical flowerheads in summer.
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0.45m max. spread |
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1m max. height |
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2-5 years to maturity |
Eryngium agavifolium (Agave-leaved sea holly )
Other names: Eryngium bromeliifolium
E. agavifolium is a rosette-forming, evergreen perennial with spiny, glossy, sword-shaped, deep green leaves and, in summer, branched stems bearing pale green to white, cylindrical flowerheads surrounded by spiny bracts.
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1.5m max. spread |
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2m max. height |
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2-5 years to maturity |
Other names: Eryngium paniculatum
E. eburneum is a clump-forming, evergreen perennial with narrowly-linear, spiny, mid-green leaves and, in late summer, arching, branching stems bearing spherical umbels of greenish-white flowers with spiny, lance-shaped bracts.
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0.6m max. spread |
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1.5m max. height |
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2-5 years to maturity |
Eryngium yuccifolium (Rattlesnake master)
Other names: Rattlesnake's master, Button snakeroot, Button eryngo
E. yuccifolium is a clump-forming, herbaceous perennial with grey-green, strap-shaped leaves with serrated margins and grey-blue, prickly flowers in summer.
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0.8m max. spread |
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1.5m max. height |
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2-5 years to maturity |
Eryngium planum 'White Glitter' (Sea holly 'White Glitter' )
'White Glitter' is a clump-forming, evergreen perennial with rosettes of toothed, oblong to ovate, grey-green leaves and, in summer, upright, branched stems bearing cone-like, silvery-white flower-heads with conspicuous, spiny bracts.
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0.45m max. spread |
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0.8m max. height |
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2-5 years to maturity |
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