One of the tallest cycads in the world, Dioon spinulosum (Giant Dioon) is an elegant, palm-like, evergreen cycad with an open rosette of perfectly arranged, blue-green, pinnate fronds, up to 6 ft. long (180 cm). They radiate out from the trunk and arch with grace. Borne atop a short stocky trunk, up to 16 in. wide (40 cm), the leaves are divided into up to 120-240 narrow leaflets, armed with small teeth along their edges. Frost, heat, sun, and drought tolerant, Dioon spinulosum is also one of the most cold-hardy cycads. It can survive temperatures down to 28ºF (-2ºC).

Tolerant of extreme heat and cold, Dyckia 'Burgundy Ice' is an evergreen succulent with striking rosettes of fleshy, gracefully curving, burgundy leaves adorned with brilliant white spines. It will maintain its burgundy color year-round if placed in full sun. In summer, spikes of bright orange flowers are borne in profusion above the foliage, brightening up the garden and attracting hummingbirds. This Dyckia produces offsets very freely, forming a dense and charming colony over time. A colorful focal point in the xeriscape, it is perfect for rock gardens and containers.

Surprisingly cold hardy, Agave ovatifolia (Whale's Tongue Agave) is an evergreen, perennial succulent forming a solitary rounded rosette of thick, broad, slightly cupped, gray to powdery-blue leaves. Adding interesting texture and interest year-round, the leaves are lined with small teeth along their margins and tipped with a long terminal spine.

Vigorous, Aloe nobilis (Golden Toothed Aloe) is an evergreen succulent perennial forming a carpet of decorative rosettes, 12in. wide (30 cm), with broadly triangular, fleshy leaves. Bright green in light shade, the leaves turn amazingly orange when in full sun, creating a very pretty display. Each leaf exhibits yellow to creamy-white teeth along the edges and a few inside which glow when backlit. In summer, spikes of bright orange tubular flowers are borne in profusion above the foliage to about 2 ft. tall (60 cm), brightening up the garden. This Aloe offsets profusely to form a large colony.