ʻO nā mea hoʻomalu uluʻehā,ʻo Paclobutrazol, Uniconazole, Chlormequat Chloride, a me Mepiquat chloride, nā mea a pau e mālama i ka uluʻana o nā mea kanu i loko o ka manawa pōkole ma ke kāohiʻana i ka synthesis o Gibberellic acid i nā mea kanu. I

Hoʻohana ʻia ʻo Paclobutrazole (Paclo) i nā mea kanu like ʻole e like me ka laiki, ka palaoa, nā mea kanu, a me nā lāʻau hua. ʻO ka Paclobutrazole (Paclo) kahi mea hoʻolalelale ulu ulu. Hiki iā ia ke pale i ka synthesis o nā gibberellin endogenous i nā mea kanu a hoʻemi i ka mahele a me ka elongation o nā mea kanu.

ʻO ka sodium nitrophenolate (Atonik) he mea hoʻoponopono kiʻekiʻe o ka ulu ʻana o ka mea kanu. Loaʻa iā ia nā hiʻohiʻona o ka hana kiʻekiʻe, ʻaʻohe mea ʻawaʻawa, ʻaʻohe koena, a me ka laulā noi ākea. Ua kapa ʻia ʻo "Green Food Engineering Recommended Plant Growth Regulator" e ka International Food and Agriculture Organization. ʻaʻohe hopena ʻaoʻao i ke kanaka a me nā holoholona.

ʻO Thidiazuron (TDZ) kahi meaʻai i haku ʻia me ka hui ʻana o ka potassium dihydrogen phosphate a me ka thiadiazuron. He nui nā hopena i ka ulu a me ka uluʻana o nā kumulāʻau hua: hoʻonui i ka hua, hoʻomaikaʻi i ka maikaʻi, hoʻomaikaʻi i ka pale ʻana i nā maʻi, a me nā mea ʻē aʻe.