Smallholder vegetable production is an important engine for economic growth in peri-urban areas of East and southern Africa. Growing vegetables provides nutrition, income and employment to over four million poor people in Kenya. The potential number of beneficiaries is huge – in Kenya alone there are more than two million farmers growing significant quantities of vegetables and almost everybody is a consumer of vegetables, particularly kale or Sukuma wiki, meaning ‘pushing the week’ in Kiswahili.