Plants of the Week
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Ornithogalum thyrsoides
Showy bulbous herb of vast horticultural importance because of its long lasting flowers suitable for use as cut flowers....
Orphium frutescens
Flowering in the heat of summer the glossy pink stars of Orphium frutescens always attract attention, especially with the surrounding vegetation going...
Ocimum labiatum
A stunning drought-hardy ornamental shrub which thrives in full sun or partial shade, flowering prolifically from early summer to late autumn....
Oscularia caulescens
Oscularia caulescens is an easy-to-grow succulent groundcover, ideal as an accent plant in especially rockeries or pots and for low-maintenance and water-wise...
Oscularia piquetbergensis
Oscularia piquetbergensis, just like O. deltoides, is another easy-to-grow succulent groundcover for low-maintenance and water-wise gardens....
Oscularia deltoides
Oscularia deltoides is an easy-to-grow, succulent groundcover, ideal as an accent plant and for low-maintenance and water-wise gardens....
Osmitopsis asteriscoides
This attractive white daisy has been in use for various medicinal purposes for hundreds of years. During spring and early summer many of the wetland areas...
Osmunda regalis
Osmunda regalis is unusual in that it forms new fertile fronds in autumn, and not in spring or summer as is common in most ferns....
Osyris compressa
This plant is now called Colpoon compressum ...
Osyris lanceolata
The evergreen, winter-flowering Osyris lanceolata is a blue-green hardy shrub or small tree. Its fleshy, yellowish green fruits become bright...
Othonna dentata
This blue-grey succulent shrublet is ideally suited to coastal gardens and deserves to be more popular with gardeners....
Othonna retrofracta
Othonna retrofracta, with its bonsai-like appearance, is suitable for water-wise gardens in arid areas....
Oxalis
Members of the genus Oxalis — with their brightly coloured delicate flowers, clover-like leaves and corolla lobes twisted in the bud — are...
Oxalis purpurea
A common but undervalued South African native plant, Oxalis purpurea can make a most magnificent garden plant that flowers for half the year....
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....
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....
Olea europaea subsp. africana
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Ozoroa sphaerocarpa
This relatively small tree has small whitish flowers, with the sexes occurring on separate plants. It is highly valued by rural communities because...
Otholobium virgatum
This is a mat-forming and low-growing, trailing, ground cover with masses of mauve-pink, pea-like flowers in spring....