Conditional inference tree showing factors determining the decision of local people to cultivate Vitex doniana. The response Yes = the informant is willing to cultivate; and No = informant not likely to cultivate. Sex (a = Female, b = Male); Instruction level, with reference to western education (a = No schooling, b = Primary, c = Secondary and higher education); Literacy level (a = Cannot read nor write in mother tongue “illiterate”, b = Can write and read in mother tongue “literate”); Location (a = Agbohoutogon, b = Dan, c = Djessi, d = Djidja centre, e = Kakatehou, f = Kome, g = Lakpo, h = Oungbega, i = Sekpongon); Veg_bought, i.e. Vegetable bought or purchase of Vitex doniana vegetable (a = No, b = Yes); Woodl_diff_climb, i.e. Difficult to climb Vitex doniana trees in the woodland (a = No, b = Yes); Famland_forbid, i.e. Harvesting is forbidden in farmland (a = No, b = Yes).