Polemekeza California Arbor Week, March 7 - 14, 2012, California ReLeaf akukondwera kuyambitsa Mpikisano wa Chithunzi cha California Arbor Week. Mpikisanowu ndikuyesa kudziwitsa anthu komanso kuyamikiridwa ndi mitengo ndi nkhalango zomwe zili m'madera omwe anthu aku California amakhala, amagwira ntchito komanso kusewera. Mpikisanowu wapangidwa kuti uwonetsere mitundu yosiyanasiyana ya mitengo, mawonekedwe, ndi mawonekedwe m'chigawo chathu chonse, m'matauni ndi akumidzi, akulu ndi ang'onoang'ono, komanso malo aboma ndi achinsinsi. Mitengo imapereka zabwino zambiri kumadera athu. Amayeretsa mpweya ndi madzi athu, amapulumutsa mphamvu, amakweza mtengo wa katundu, amalimbikitsa kunyada kwa anthu oyandikana nawo, amapereka malo okhala nyama zakutchire, amatsitsimutsa midzi, ndikupanga malo osangalatsa akunja kuti anthu azisewera, kuchita masewera olimbitsa thupi komanso kucheza. Kuphatikiza apo, mitengo imapereka mapindu ofunikira okhudzana ndi thanzi ndi zakudya, kuchepetsa umbanda, kukongoletsa madera, kukonzanso malo okhala, komanso nyonga zachuma. Tikuyang'ana zithunzi m'magulu otsatirawa: Mtengo Wanga Wokondedwa waku California, ndi Mitengo Yomwe Ndimakhala.