Choisya 'Goldstone' is a Cistus Nursery introduction with finely textured, linear leaflets in shades gold and lime green.

Chrysogonum virginiana var. australe or goldenstar is a an evergreen ground cover with single yellow flowers all summer long.

Chrysosplenium macrophyllum is a rare groundcover with leathery leaves, burgundy when young, and fragrant clusters of white flowers.

Cistus x hybridus Little Miss Sunshine forms mounds gold variegated leaves topped with pure white, rose-like flowers in summer.

'Mickie' rock rose forms a mound of gold and green evergreen foliage topped with white flowers in early summer.

Citrumelo (xCitroncirus) is a cross between a grapefruit and the very hardy trifoliate orange (Poncirus trifoliata) and tastes like something between the two. It is hardy outdoors on the west coast.

Citrus (formerly Microcitrus) australasica, the Australian finger lime, is a lime relative from Australia and a top citrus for foodies.

Citrus (formerly Microcitrus) australasica, the Australian finger lime, is a lime relative from Australia and a top citrus for foodies.

Citrus australasica Red Skin can have fruit with skin with a reddish cast hiding the tasty, clear lime caviar within.

Citrus bergamia, or bergamot, resembles an orange in shape, but is green or yellow like a lemon.

'Calamandarin' is a cross of the calamondin or calamansi (xCitrofortunella mitis) and a mandarin orange (Citrus reticulata).

Citrofortunella mitis is a small, beautiful shrub with large crops of fruit known as calamondin or calamansi in Philippine cuisine.

Citrofortunella mitis is a small, beautiful shrub with large crops of fruit known as calamondin or calamansi in Philippine cuisine.

Citrofortunella mitis ‘Variegata’ has variegated foliage, fragrant white flowers, and large crops of variegated fruit.

Citrofortunella mitis ‘Variegata’ has variegated foliage, fragrant white flowers, and large crops of variegated fruit.

Citrus medica 'Assads' forms fragrant lemon-like fruits with thick peel called an etrog. They are used for the Jewish Feast of the Tabernacles (Sukkot).

Citrus medica 'Etrog' forms fragrant lemon-like fruits with thick peel that are used for the Jewish Feast of the Tabernacles (Sukkot).