Moisture retentive soil
Well drained soil
A very striking form of sea holly with heads of snowflake-like prickly bracts surrounding a bold blue cone, all over prickly green and white foliage.
This Sea Holly has a slightly different inflorescence in that it is very spiny and it is silver while the thistle flower is cream.
Producing a cloud of blooms, each with a steely blue central cone encircled with pointed silvery bracts on blue multi-branched stems, its striking display lasts from mid to late summer.
This plant really lives up to its name, 'Big Blue', the intensity of blue on the large flower heads is stunning.
It forms good sized clumps in a reasonably fertile soil in full sun, and is great ...
A new and totally unique introduction of Sea Holly - the foliage of this Eryngium is a brilliant golden colour , it will become lime green if slightly shady. The flower spikes, stems and flower bracts
A stately perennial, with rosettes of green heart shaped basal leaves exploding into tall umbels of large green flowers maturing to silver
This wonderful sea holly, often known as 'Sapphire Blue' is a product of the cut flower trade and produces good large electric blue thistle flowers in mid summer.