Invasive weeds which compete with the plant for resources include bridal creeper (Asparagus asparagoides), bitou bush (Chrysanthemoides monilifera), blackberry (Rubus fruticosus agg.), St John's wort (Hypericum perforatum), kikuyu (Pennisetum clandestinum), lantana (Lantana camara), African olive (Olea africana subsp. africana) and privet (Ligustrum lucidum).