Eryngium x zabelii 'Big Blue' (Sea holly 'Big Blue')
Other names: Eryngium 'Big Blue'
'Big Blue' is an upright, clump-forming, deciduous perennial with spiky, deeply divided, silvery grey-green, leaves and, in summer, stiff, branched stems bearing cone-shaped, blue flowerheads surrounded by prominent, spiny, silvery-blue bracts.
Read more...
![]() |
0.45m max. spread |
![]() |
0.8m max. height |
![]() |
2-5 years to maturity |
Eryngium x oliverianum (Oliver eryngo)
E. x oliverianum is an erect, deciduous perennial with ovate to heart-shaped, toothed, dark green leaves and branched stems bearing cone-like umbels of tiny flowers surrounded by showy, narrow, spiny, blue to purple bracts.
Read more...
![]() |
0.5m max. spread |
![]() |
0.9m max. height |
![]() |
2-5 years to maturity |
Other names: Sea holly, Flat-leaved eryngo, Plains eryngo
E. planum is a clump-forming, evergreen perennial with rosettes of toothed, oblong to ovate, dark grey-green leaves and, in summer, upright, branched stems bearing cone-like, light blue flower-heads with conspicuous, linear, spiny, blue-green bracts.
Read more...
![]() |
0.45m max. spread |
![]() |
0.9m max. height |
![]() |
2-5 years to maturity |
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.
Read more...
![]() |
0.45m max. spread |
![]() |
1m max. height |
![]() |
2-5 years to maturity |
Eryngium x tripartitum (Tripartite eryngo)
E. x tripartitum is an herbaceous perennial with a bushy habit. Its basal leaves are grey-green and it has erect, violet-blue branches. In summer and autumn it bears cone-like purple heads with dark-blue bracts.
Read more...
![]() |
0.5m max. spread |
![]() |
0.9m max. height |
![]() |
2-5 years to maturity |
Eryngium alpinum (Alpine eryngo)
Other names: Alpine sea holly, Eryngium alpinum Blue Distel, Blue thistle
E. alpinum is an erect herbaceous perennial with heart-shaped, glossy dark green leaves. Large, cone-like, purplish flowers surrounded by vivid blue, spiny bracts, borne on blue stems.
Read more...
![]() |
0.5m max. spread |
![]() |
1m max. height |
![]() |
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.
Read more...
![]() |
1.5m max. spread |
![]() |
2m max. height |
![]() |
2-5 years to maturity |
Eryngium x zabelii 'Violetta' (Sea holly 'Violetta')
Other names: Eryngium 'Violetta'
'Violetta' is a clump-forming, semi-evergreen perennial with heart-shaped, spiny, mid-green leaves and, in summer, blue stems bearing lobed leaves and cylindrical umbels of violet-blue flowers with prominent, silvery blue bracts.
Read more...
![]() |
0.5m max. spread |
![]() |
0.8m max. height |
![]() |
2-5 years to maturity |
Eryngium bourgatii (Mediterranean sea holly)
Other names: Bourgati's eryngo
E. bourgatii is a clump-forming, herbaceous perennial with rounded, deeply lobed, spiny, silver-veined, dark green leaves and, in summer, branching, deep blue stems bearing umbels of blue or grey-green, cone-like flowers with prominent, lance-shaped, blue-flushed, silver bracts.
Read more...
![]() |
0.3m max. spread |
![]() |
0.45m max. height |
![]() |
2-5 years to maturity |
Eryngium maritimum (Sea holly)
Other names: Seaside eryngo
E. maritimum is a mound-forming, evergreen perennial with upright to decumbent stems bearing stiff, spiny, blue- to grey-green leaves and cone-like, blue flowers from summer into autumn.
Read more...
![]() |
0.5m max. spread |
![]() |
0.5m max. height |
![]() |
2-5 years to maturity |
To add ? to your lists,
login to your account or subscribe.
Find out more about plant lists here
or Login