(Leavenworth's Eryngo, Texas Seaholly)

Pineapple-like flowers that blush from green to rich violet-purple in very late summer makes Leavenworth eryngo one of America's most vibrant dryland wildflowers. Eryngium leavenworthii is an annual native to dry prairie soils across Texas and into Oklahoma and Arkansas. The plant has a basal rosette of oblong, coarse, spiny-lobed green leaves. In midsummer it produces pineapple-like flowers with a barreled cluster of green buds with a tuft of spiny leaves atop a tall branching stem. By...

(Blue Eryngo, Flat Seaholly)

Evergreen thistle-like leaves and steel blue flowers makes the flat seaholly or blue eryngo a favorite perennial for sunny, gravelly gardens. Eryngium planum is a hardy herbaceous perennial native to dry rocky mountain slopes of southeastern Europe to central Asia. It has a dense basal rosette of heart-shaped, coarse, spiny dark green leaves that are leathery. In summer it produces plume-like flowers with a barreled cluster of fertile, tiny pale blue flowers surrounded by many spiny bracts...

(Blue Eryngo, Blue Glitter Eryngo, Blue Glitter Seaholly)

Evergreen thistle-like leaves and glistening steel blue flowers makes the Blue Glitter seaholly or blue eryngo a favorite perennial for sunny, gravelly gardens. Eryngium planum is a hardy herbaceous perennial native to dry rocky mountain slopes of southeastern Europe to central Asia. A selection from the growers at Ernst Benary in Germany, 'Blue Glitter' has a dense basal rosette of heart-shaped, coarse, spiny dark green leaves that are leathery. In summer it produces plume-like flowers...

(Blue Eryngo, Blue Hobbit Eryngo, Blue Hobbit Seaholly)

Evergreen thistle-like leaves and steel blue flowers makes the dwarf Blue Hobbit seaholly or blue eryngo a favorite perennial for sunny, gravelly gardens and containers. Eryngium planum is a hardy herbaceous perennial native to dry rocky mountain slopes of southeastern Europe to central Asia. It has a dense basal rosette of heart-shaped, spiny dark green leaves that are leathery. In summer 'Blue Hobbit' is covered in plume-like flowers with a barreled cluster of fertile, tiny pale blue...

(Blue Eryngo, White Glitter Eryngo, White Glitter Seaholly)

Evergreen thistle-like leaves and glistening silvery ivory flowers makes the White Glitter seaholly a favorite perennial for sunny, gravelly gardens. Eryngium planum is a hardy herbaceous perennial native to dry rocky mountain slopes of southeastern Europe to central Asia. A selection from the growers at Ernst Benary in Germany, 'White Glitter' has a dense basal rosette of heart-shaped, coarse, spiny dark green leaves that are leathery. In summer it produces pincushion-like flowers with...

(Moroccan Seaholly)

The evergreen Eryngium variifolium is a hardy herbaceous perennial native to Morocco and other parts of North Africa. Moroccon seaholly is distinguished by its dense basal rosette of oblong, course, spiny dark green leaves with silvery veins. In summer it produces thistle-like flowers with a conical cluster of fertile flowers surrounded by five to seven spiny bracts of silvery white to silvery-blue. The long-lasting flowers are borne atop compact branched stems and are highly attractive...

(Miss Marble Seaholly, Moroccan Seaholly)

The compact and heavy-blooming ‘Miss Marble’ has bluer flowers than your average Eryngium variifolium and pretty, more rounded leaves that look great all year around.

This evergreen hardy herbaceous perennial originates from Morocco and other parts of North Africa, so you know it can take heat and drought. Moroccon seaholly is distinguished by its dense basal rosette of oblong, course, spiny dark green leaves with paler veins. In summer it produces thistle-like flowers with a conical...

(Button Snakeroot, Rattlesnake Master)

Sword-shaped clumps of spiny, gray-green leaves are topped in summer by tall stems of pale silvery-green flowers on the imposing rattlesnake master. A semi-evergreen perennial that grows from a deep taproot, it is native to the rocky, drier glades and prairies across the eastern United States. It is an upright plant that will become a tufted clump.

Each leaf is sword-shaped, blue-gray to gray-green and has spines along the edges. Leaves cluster in a basal rosette. In midsummer onwards, towering...

(Citrona Orange Siberian Wallflower, Wallflower)

The bright tangerine blooms of ‘Citrona Orange’ will brighten any early border. The large fragrant clusters of flowers appear above compact vigorous plants. Wallflowers have been long cherished in English cottage gardens for their sweetly scented brightly colored blooms. They are tough short-lived perennials that grow best where summers are cool and mild.

The low mounding plants produce clusters of green lance-shaped leaves. ‘Citrona Orange’ blooms in spring and again in fall if well-tended...

(Citrona Yellow Wallflower, Wallflower)

The golden yellow blooms of ‘Citrona Yellow’ will brighten any early border. The large fragrant clusters of flowers appear above compact vigorous plants. Wallflowers have been long cherished in English cottage gardens for their sweetly scented brightly colored blooms. They are tough short-lived perennials that grow best where summers are cool and mild.

The low mounding plants produce clusters of green lance-shaped leaves. ‘Citrona Yellow’ blooms in spring and again in fall if well-tended...