Ndodo yothandizira ndi chinthu chotanuka chokhala ndi gasi ndi madzi monga sing'anga yogwirira ntchito. Zimapangidwa ndi chubu chopondereza, pisitoni, ndodo ya pisitoni, ndi zolumikizira zingapo. Mkati mwa ndodo yothandizira imadzazidwa ndi nayitrogeni wothamanga kwambiri