Conophytum bilobum is an intriguing living pebble with pale bluish succulent leaves with two lobes that make them look like rabbit ears.

Conophytum maughanii is a living pebble that looks like a soft, fat, jelly-like succulent with a central cleft and shallow lobes.

Conophytum minimum 'Wittebergense' is a darling living pebble forming roundish, succulent heads with bold dark spotting.

Conophytum scitilum is a cute living pebble forming roundish, succulent heads with bold dark lines against a blue-grey background.

Conophytum vanzylii is a living pebble with nearly perfectly round bluish green spheres with a small cleft like red lips.

Cordyline australis Pink Passion 'Seipin' is a dazzling cabbage palm with electric pink and burgundy foliage forming spiky displays of subtropical drama.

Cordyline terminalis 'Cherry Cordial' is a fantastic ti plant with shiny, tropical multicoloured foliage in mahogany, olive green and bright red.

Cordyline 'Dancing Paso Doble' is a subtropical cabbage palm with dramatic deep purple foliage with hot pink edges.

Cordyline 'Renegade' is a subtropical cabbage palm with glossy, dark purple foliage that appears almost black.

Cordyline 'Salsa' is a dazzling cabbage palm with bright red and deep pink foliage forming spiky displays of subtropical drama.

Cornus capitata 'Mountain Moon' is an evergreen dogwood with grey-green foliage and large, white to pale yellow flowers.

Cornus elliptica Empress of China is a gem of an evergreen tree with copious pointed white flowers and purple winter foliage.

Cortaderia 'Blue Bayou' is a dwarf pampas grass with blue foliage and classic white flower plumes on plants of a manageable size.

Corydalis ochroleuca is smothered in fragrant, creamy white, tubular flowers with yellow at the centres for months.

Corydalis 'G.P. Baker' has amazing near-red flowers atop delicate bluish-green foliage in spring.

Corydalis solida 'Purple Bird' has warm purple flowers atop delicate bluish-green foliage in spring.

Cotyledon orbiculata 'Mucronata' forms short stems of large, fan-shaped, succulent, silver leaves with heavily-ruffled margins.

Cotyledon tomentosa subsp. ladismithiensis Variegata Group is a succulent shrublet with fuzzy, variegated leaves.

Cotyledon 'Happy Young Lady' is an upright, branching succulent to 12 inches tall or more with lovely, silver, finger-like leaves with reddish purple at the tips.