Eryngium agavifolium is a tough, evergreen plant with cool looking leaves like an agave!

If you love cool plants and blue flowers, sea hollies will give you what you need.

Blue flower heads of the ultra-compact Eryngium planum 'Blue Hobbit' are surrounded by large frilled blue bracts.

Eryngium 'Jade Frost' has gorgeous variegated green and white foliage blushed with pink in spring and then topped with true blue thistle-like thimbles in summer.

Eryngium 'Neptune's Gold' is the first sea holly with totally gold leaves. It has classic blue thimbles and bracts that are blue and gold.

Eryngium yuccifolium is a near native to Ontario known as rattlesnake master with yucca-like foliage and tall stems of white thimbles.

Eryngium 'Big Blue' is one of the best sea hollies with masses of blue, thistle-like thimbles.