Whenever The Cactus Plant Is Mentioned To Kenyans, It Conjures Up Images Of An Invasive Species Of Plant That Has Colonized Thousands Of Hectares Of Land In Arid And Semi-Arid Parts Of The Country. So Unpopular Has Been The Cacti That No Less Than The Environment Authority's In The Country Once Toyed With The Idea Of Biologically Controlling The Plant By Releasing Insects That Had Been Used To Successfully Eliminate The Plant In South Africa And Australia.