Agave palmeri is the largest species native to the United States with blue-green, lance-shaped leaves.

Agave parrasana 'Globe' forms a rounded rosettes of broad, waxy, blue leaves edged with dramatic spines.

Agave parryi 'Cream Spike' is a spectacular succulent displaying blue-green leaves surrounded by a dramatic creamy-white margin.

Agave 'J.C. Raultston' has a particularly beautiful form of wide, bluish grey, succulent leaves and greater tolerance of wet winters.

Agave parryi var. huachucensis is a dramatic form with bluish-grey succulent leaves held in tight artichoke-like rosettes.

Agave parryi var. truncata is a dramatic, bluish-grey succulent with tight artichoke-like rosettes and shorter leaves than other forms.

Agave parryi 'Lime Streak' is a rare variegated form with bluish green leaves with light green edges.

Agave parviflora var. flexiflora is a small, solitary agave dark green leaves marked with silver-white and with curling threads or filifers along the leaf edges.

Agave pintilla is a small relative of Agave victoriae-reginae with hard, thick, dark green to olive green foliage with white linear markings.

Agave potatorum has blue-green leaves a tight, round rosette with cinnamon brown marginal and terminal spines.

Agave 'Desert Diamond' is a striking, variegated, dwarf agave with green and cream foliage perfect for container culture.

Agave schidigera 'Royal Flush' is a dwarf, variegated Century Plant with lance-shaped leaves edged in creamy yellow with dark green centres.

Agave 'Shira ito no ohi' has white threads that adorn the leaf margins of this cute, variegated century plant.

Agave striata, the narrow leaf century plant, is a hardy species with very thin, almost wiry, green to blue-green leaves.

Agave stricta var. rubra, known as the red hedgehog agave, is a fascinating variety with long, narrow, stiff, quill-like, grey-green leaves turning red with stress.

Agave utahensis ssp. eborispina is a dramatic, super hardy, small agave with the longest terminal spines of the subspecies up to 4 inches long!

Agave utahensis ssp. kaibabensis is the largest and most cold hardy subspecies of the Utah century plant tolerating zone 5 winters.

Agave utahensis or Utah Agave is one of the hardiest of all century plants.

Agave victoriae-reginae is one of the most desirable of species. Porcupine' forms small rosettes of dark green leaves accentuated with silver markings.

Agave x leopoldii has narrow, dark green leaves with attractive white filifers "sproinging" off the leaf margins.