Plant Highlights By Date
Euphorbia susannae is a small clustering species which makes dome-like clumps to 4 inches tall (10 cm) and a foot across (30 cm).
Like other types of barrel cactus, Ferocactus robustus has ribs, or ridges, running up its sides. This particular species has 8 ribs
The leaves of the more robust forms of Gasteria excelsa are long and sword-like, and a large plant may attain a diameter of 2 to 2½ feet or more.
A. flexispina does not get very big, measuring about a foot to a foot and a half across. It typically makes a few ofsets but some remain single.
Euphorbia resinifera forms a mound of chubby columnar stems which expands over time, with the tallest central stems reaching a height of 2 to 2½ feet.
Though various kinds of Aeonium are frequently seen in California gardens, Aeonium smith is one of the exceptions and has remained uncommon.
Cleistocactus hyalacanthus branches at the base to form a cluster of stems densely clad in yellowish-white needle-like spines.
One of the largest-growing species of Pachyphytum is Pachyphytum fittkaui, native to northern Guanajuato State and southern San Luis Potosí in Mexico.
Grevillea petrophiloides is a very distinctive species native to Western Australia. It forms a bush which can eventually reach a height of 5 feet or so.
Aloe mudenensis may be single-headed, or it may put out a few offsets to form a small clump. Rosettes grow to a diameter of 1½ to 2 feet (45 to 60 cm).