Kirstenbosch National Botanical Gardens cultivate and display African indigenous plants from all over Southern Africa (mainly South Africa) with an emphasis on South Africa's fynbos families such as Proteaceae, Ericaceae and Restionaceae. Other families displayed are Asteraceae (such as Namaqualand daisies), Asphodelaceae (aloes), Geraniaceae (a wonderfully vast collection of species of Pelargonium).
Here is a quick by-family overview of some genera to look out for.
Proteaceae:
Leucospermum, Leucadendron, Protea
Look out for the beautiful silver tree Leucadendron argenteum, whose range is mainly restricted to Table Mountain. It is really really silver in colour.
Ericaceae:
Erica
Geraniaceae:
Pelargonium
Geranium
Sterculiaceae:
Sterculia
Hermannia
Moraceae:
Ficus
Asteraceae:
Ursinia
Dimorphotheca
Gazania
Berkheya
Felicia
Mesembryanthemaceae/Aizoaceae:
Lampranthus
Ruschia
Look out for the spring displays of succulent mesembryanthemums whose flowers are hugely bright red, orange, white or yellow. Lampranthus means bright flower.
Euphorbiaceae:
Euphorbia
Look out for the huge succulent greenhouse or the 'rocky areas' of the gardens - paths through rockeries - where displays of succulents such as the cactus-like euphorbias are found.
Lamiaceae:
Salvia
Plectranthus
Iridaceae, Orchidaceae, Hyacinthaceae and Amaryllidaceae:
These are bulbous irises, orchids...geophytes in general and there are beautiful displays in glass houses.
Dietes
Lachenalia
Amaryllis
Asphodelaceae:
Aloe
There are wonderful displays of many many families of plants. There are spring daisy blooms and mesembryanthemum blooms. There are glasshouses of ferns and bulbous geophytes (orchids, irises and Streptocarpus). There are extinction gardens showing rare or extinct-in-the-wild species such as Felicia tricolor and Erica verticillata. There are medicinal gardens and, out of the cultivated areas, walks through the wild fynbos of Table Mountain.
There are wonderful trees, representatives of many species of South Africa's huge tree-flora. Genera of trees found at Kirstenbosch include: Aloe, Acacia (Senegalia), Alsophila, Cussonia, Ficus, Croton, Euphorbia, Sterculia, Rhus, Crotalaria, Adansonia, Kigelia, Grewia, Podocarpus, Dombeya, Cassine, Canthium, Schotia, Encephalartos and Ilex.
Look for:
Sausage tree Kigelia africana
Quiver tree Aloe dichotoma
Baobab Adansonia digitata
Mopane Colophospermum mopane
Buchu Agathosma spp.
Cabbage tree Cussonia spp.
Namaqualand daisy Dimorphotheca spp.
Many rare and endangered species
Many plants are collections of species from the same genus - document how vast these per-genus collections can be
Erica Erica spp.
Pelargonium Pelargonium spp.
Cycad Encephalartos spp.
Drooping Agapanthus Agapanthus inapertus
Silver tree Leucadendron argenteum
Plectranthus
Otholobium
Hermannia
Lobostemon
Salvia
Bulbine
Crassula
Albuca
Ornithogalum
Streptocarpus
Lampranthus
Dissotis (rather like a tibouchina)
Nemesia
Lobelia
Olea (wild olive)
Maytenus
Freylinia (look out for both the beautiful common species and the highly endangered species)
Acmadenia
Agapanthus
Pavetta (delicate white flowers, small shade-growing tree)
Rothmannia (beautiful in full bloom - gardenia-like)
Hemizygia (wonderful, long pink blooms)
Orthosiphon
Leonotis
Hibiscus (yes, there are South African hibiscus)