Pono ka hapa nui o nā mea kanu i ka mālamalama e ulu pono ai no ka mea he mea nui ka mālamalama no ka photosynthesis. Me ka ʻole o ia mea, ʻaʻole hiki i nā mea kanu ke hana i ka meaʻai. Akā hiki i ka mālamalama ke ikaika loa, wela loa, a lōʻihi paha no ka ulu ʻana i nā mea kanu olakino. Ma keʻano laulā, ʻoi aku ka maikaʻi o ka mālamalama. Hoʻolalelale ka ulu ʻana o nā mea kanu me ka mālamalama nui no ka mea ʻoi aku ka nui o nā lau o ka mea kanu i loaʻa i ka ʻike; ʻo ia hoʻi ka photosynthesis hou aʻe. ʻElua makahiki i hala aku nei, ua waiho au i ʻelua mau mea kanu like i loko o ka hale kōmahana no ka hoʻoilo. Ua waiho ʻia kekahi ma lalo o kahi kukui ulu a ʻaʻole kekahi. I ka pūnāwai, ua kupaianaha ka ʻokoʻa. ʻO nā mea kanu i loko o ka pahu ma lalo o ke kukui ua kokoke i 30% ka nui ma mua o ka poʻe i loaʻa ʻole i ka mālamalama hou. Ma waho aʻe o kēlā mau mahina liʻiliʻi, ua noho mau nā pahu ʻelua ma ka ʻaoʻao. I nā makahiki ma hope mai, ua maopopo mau ka pahu ma lalo o ke kukui. ʻO ka pahu i loaʻa ʻole ka mālamalama i hoʻohui ʻia ua olakino maikaʻi loa, ʻoi aku ka liʻiliʻi. Me nā mea kanu he nui, akā naʻe, ʻaʻole lawa ka lōʻihi o nā lā hoʻoilo. Pono nā mea kanu he 12 hola a ʻoi aku paha o ka mālamalama i kēlā me kēia lā, pono kekahi i 18.

ʻO ka hoʻohui ʻana i nā kukui ulu i kāu hale kōmahana he koho maikaʻi loa inā ʻoe e noho ana ma ka ʻĀkau a ʻaʻole loaʻa nā hola he nui o ke ao hoʻoilo. He koho maikaʻi loa nā kukui ulu e pani i kekahi o nā kukuna i nalowale. Malia paha ʻaʻohe ou wahi hema kūpono ma kou ʻāina no kahi hale kōmahana. E hoʻohana i nā kukui ulu e hoʻonui i ka lōʻihi o ke ao a me ke ʻano a me ka ikaika o ke kukui. Inā ʻaʻole hoʻolaha maikaʻi kāu uhi hale kōmahana i ka lā, hiki iā ʻoe ke hoʻohui i nā kukui e hoʻopiha i nā aka no ka ulu like ʻana.