セント・ジョーンズ・ワート
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").