Opuntia sp. (John B.) has mid green new pads becoming bluish with long cinnamon spines & yellow flowers with red centres.

Opuntia utahensis is known as the grizzlybear prickly pear perahps thanks to its copious, long white spines.

Opuntia 'Cyclops'has rounded pads with few spines & only brown glochids like polka-dots with cheerful yellow flowers.

Orostachys ‘Chinese Hat’ is a succulent hybrid that forms succulent rosettes of pale silver/grey foliage with yellow flowers.

Orostachys japonica is a hardy rosette succulent with many cylindrical, pointed, light green leaves that can flush orange.

Osmanthus fragrans f. thunbergii has small, pale yellow, extremely fragrant, edible flowers famous in China for use in teas and other foods.

Othonna capensis or little pickles is an extremely hardy ground-covering succulent with blue-green leaves and yellow daisy flowers.