Kuvomera nimwe mubikorwa byingenzi byo gucunga ibihingwa bya bonsai. Kuvomera bisa nkibyoroshye, ariko ntibyoroshye kuvomera neza. Kuvomera bigomba gukorwa ukurikije ubwoko bwibimera, impinduka zigihe, igihe cyo gukura, igihe cyurabyo, igihe cyo kuryama hamwe nikirere cyikimera. Kumenya igihe cyo kuvomera nubunini ningirakamaro cyane mumikurire yibimera. Urupfu rwibimera bimwe na bimwe bifitanye isano itaziguye no kuvomera nabi.

Usibye gutanga amazi nintungamubiri ku bimera byabumbwe, ubutaka bw inkono butuma kandi ibimera bihumeka neza. Iyo ubutaka bw'inkono bufite ubushuhe buhagije, ibice by'ubutaka byaraguka, bigahumeka umwuka mu cyuho kiri hagati y'ibice, bigatuma habura umwuka mubutaka bw'inkono; iyo ubutaka bwinkono bwumye cyangwa bugereranije, ibice byubutaka bigabanuka, ingano iba nto, kandi icyuho kiri hagati yacyo kigaragara. Ibyuho byuzuye umwuka.

Mugihe ubutaka buhinduka hagati yumye nubushuhe, umwuka mubutaka bwinkono nawo uzenguruka ubudahwema, bigatuma imizi yibimera ihumeka bisanzwe. Nyuma yo kuvomera, imizi yikimera izashobora kwihanganira kubura ogisijeni mu butaka bw inkono mugihe gito. Nyamara, niba ubutaka bwinkono butose cyane mugihe kirekire, bikaviramo kubura ogisijeni igihe kirekire, bizatera isuri nizindi ndwara; Niba ubutaka bwumutse igihe kirekire, nubwo mubutaka bwinkono harimo ogisijeni ihagije, ibimera ntibishobora gufata amazi igihe kirekire, nabyo bikaba byangiza imikurire yibimera ndetse bishobora no kubapfa. Kubwibyo, mugihe cyo kuvomera ibihingwa bya bonsai, hagomba gukurikizwa ihame ryo "kutavomera igihe ryumye, uzuhire neza".

Kuvomera bidahagije no kubura umwuma wibimera bizatera amashami kwishira no gutemba, kandi amababi akuma, agahinduka umuhondo, akagwa. Kubijyanye nubwoko bwibimera, inshinge zizoroha kandi zitakaza imbaraga zikomeye kandi zoroshye. Iyo ibura ry'amazi rikabije, cortex y'amashami iragabanuka nk'ingagi. Niba uhuye nibi bihe byizuba, ugomba guhita wimura igihingwa ahantu h'igicucu. Ubushyuhe bumaze kugabanuka, banza utere amazi kumababi, hanyuma usukemo amazi make mumasafuriya, hanyuma usukemo amazi neza nyuma yisaha imwe.

Ku bimera bidafite umwuma mwinshi, menya neza ko utavomera icyarimwe icyarimwe, kuko mugihe igihingwa kidafite umwuma mwinshi, cortex yumuzi yagabanutse kandi yegereye xylem. Niba amazi menshi yatanzwe gitunguranye, sisitemu yumuzi izaguka kubera kwinjiza amazi byihuse, bigatuma cortex iturika, bigatuma igihingwa gipfa, bityo hakaba hakenewe inzira yo kurwanya buhoro buhoro. Nyuma yuko ibimera bigufi cyane byamazi bimaze kuvurwa haruguru, nibyiza kubibungabunga munsi yigitutu cyigicucu muminsi mike, hanyuma ukabihinga izuba bimaze gukomera. Ariko rero, ntukarengere amazi. Usibye gutera ibimera gukura cyane, bigira ingaruka kumiterere yibiti nagaciro keza, kuvomera cyane birashobora no kubora imizi no gupfa. Inkono ntoya ya bonsai isaba ubutaka buke, bityo rero ni ngombwa cyane kuyuhira mugihe gikwiye kandi muburyo bukwiye.