North-West University Botanical Garden rockery. Some more common plant genera represented in the garden include Acacia, Aloe, Bonatea, Crinum, Dierama, Encephalartos, Eucomis, Eulophia, Euphorbia, Gasteria, Gladiolus, Haworthia, Hypoxis, Indigofera, Kniphofia, Plectranthus, Podocarpus, Polygala, Scadoxus, Searsia, Stapelia and Zantedeschia. In the tropical greenhouse a variety of tropical and subtropical plants from all over the world can be found. Some of the plants include a variety of food and medicinal plants including "Coffea arabica" (coffee), "Camellia sinensis" (tea), "Vanilla planifolia" (vanilla), "Saccharum officinarum" (sugarcane), "Cinnamomum zeylanicum" (cinnamon), "Oryza sativa" (rice), "Theobroma cacao" (cacao), "Siphonochilus aethiopicus" (wild ginger), "Warburghia salutaris" (pepper bark tree) and "Piper nigrum" (pepper).
Mythimna separata light dorsal stripe, with black-brown lateral stripe along spiracle line. spiracles brown with black rim. Pupae are yellowish brown and shiny. The moth flies from January to April depending on the location. The larvae feed on a range of agricultural plants like "Zea mays", "Sorghum bicolor" and "Oryza sativa" and are thus considered a pest. Caterpillars do not feed on "Momordica charantia" due to the presence of the triterpenoid glucoside called momordicine II, which is a natural inhibitor of caterpillar actions. China experiences periodic outbreaks of northern armyworm infestation. The outbreak in 2012 was particularly severe. Larva can be hand