Zerere (Chirungu: Green) ruvara rwekutanga (primary colour), uye huri pakati peungu nehuroro pane sipekitirumu inoonekwa. Zerere ndeimwe ruvara rwekutanga yekuwedzera kana kusanganisa kuti mamawe mavara agadzirwe, pamwe chete netsvuku uye ungu. Nechakakura zvikuru, ruvara rwezerere runowanikwa muzvisikwa zvakadyarwa seKurorofiwu kana Zererefi (chlorophyll), kemikari inoshandiswa nezvidyarwa parukanerujeko (photosynthesis) ne kushandura chiedza chezuva kuita simba remakemikari. Zvisikwa zvakawanda zvino shanduka kutora hyu yezerere yenharaunda sechifukidzo kana kamofuraji (camourflage). Zvicherwa (maminarausi) zvakawanda zvine ruvara rwezerere, kusanganisira iyo emerodhi, inopihwa ruvara rwayo rweshedhi yezerere nekuromiyamu kana kuromu (chromium; chrome) yainayo. Mune ongororo dzakaitwa muAmerika, Yuropu, uye nyika dzeIsiramu (Islam), zerere ndiro ruvara runowanzo batanidzwa nehunhu, hupenyu, hutano, hudiki (youthfulness), chitubu, tariro, negodo. MuBatanidzo yeYuropu (Europe Union) neHyunaitedhi Stetsi (United States), zerere zvakare dzimwe nguva inosanganisirwa nehuturu uye hutano husina kunaka, asi kuChayina nenzvimbo zhinji dzeEzhiya, masangano ayo akanaka kwazvo, sechiratidzo chekubereka uye mufaro. Nekuda kwekudyidzana kwaro nemasikirwo, ihwo ruvara rwekufamba kwezvakatipoteredza.