Examples from the Web for uncultivable
Chemicals and pesticides are used with abandon, sometimes leading to uncultivable soil.
Truffles are uncultivable, so there are no truffle farms to produce affordable truffles for the masses.
What remained outside this and the residential patches of private land was classified as cultivable and uncultivable.The Glories of Ireland|Edited by Joseph Dunn and P.J. Lennox
The great plain of Irak, the ancient Babylonia, is not only uncultivated now, but for the most part is uncultivable.A Pilgrimage to Nejd, Vol. 2 [of 2]|Anne Blunt
Uncultivable, un-kul′ti-va-bl, adj. not capable of being cultivated.