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Ocimum labiatum
A stunning drought-hardy ornamental shrub which thrives in full sun or partial shade, flowering prolifically from early summer to late autumn....
Ocotea bullata
The black stinkwood, or stinkwood as it is commonly known, is a large evergreen tree suitable for large gardens and parks. Along with yellowood, its timber...
Ocotea kenyensis
A big, attractive, fast-growing, evergreen tree of up to 30 m height with a much-branched, rounded canopy of simple, glossy, usually aromatic leaves, with...
Oldenburgia paradoxa
Oldenburgia paradoxa is an unusual cushion-shaped species of the daisy family that grows on rocks in the Cape mountains and looks like an alpine plant....
Oncosiphon grandiflorum
This tall, button-flowered annual is ideal for larger gardens and can be grown as a spring and summer annual....
Orbea lutea
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Orbea melanantha
A mat-forming succulent that can spread on the surface of the soil with no trace of underground rhizomes, this water-wise plant will be an excellent addition...
Ornithogalum candicans
The summer hyacinth, with its fragrant bell-shaped flowers, is an ideal accent plant in a mixed bed and is also very suitable for cut flowers. It was previously...
Ornithogalum regale
The ever so graceful Ornithogalum regale is one of the summer flowering gems of the Drakensberg....
Ornithogalum saundersiae
The giant chincherinchee is an attractive, easily cultivated garden plant and produces eye-catching, long-lasting flowers that are very suitable for use...
Orphium frutescens
Flowering in the heat of summer the glossy pink stars of Orphium frutescens always attract attention, especially with the surrounding vegetation going...
Orthanthera jasminiflora
The relatively unknown small genus, Orthanthera consists of six species: five in Africa and one from India, Pakistan and Nepal. It is unknown whether plants...
Osteospermum incanum subsp. incanum
A vigorous, sprawling, densely-branched, low-growing grey shrub that is suitably equipped to beautify coastal and interior gardens alike. Its grey leaves,...
Osteospermum scariosum
Osteospermum scariosum is a beautiful yellow daisy, the flowerheads often having a striking dark ring around the centre....
Otholobium bracteolatum
A resilient, beautiful, sprawling shrub, not easily missed because of its pretty mauve and white flowers, which are borne in dense rounded inflorescences...
Othonna quinquedentata
The five-tooth baboon cabbage, with its thick, light green, slightly fleshy leaves, looks inconspicuous at most times of the year but a few months after...
Oxyanthus pyriformis subsp. pyriformis
Medley Wood described this loquat-like shrub as ‘an exceedingly handsome shrub of good habit, growing generally under large trees in those parts...
Ozoroa barbertonensis
Ozoroa barbertonensis is different from the rest of the southern African species of Ozoroa, with its beautiful, much longer, narrow leaves with shiny upper...
Ozoroa obovata var. elliptica
The broad-leaved resin tree is a semi-deciduous to evergreen shrub or tree that is suitable for small gardens....
Ozoroa paniculosa
An attractive, small to medium-sized tree. Its leaves are bluish grey above and silvery below with strikingly straight, parallel side veins....