fruitless

[S]he [Rachel Carson] also warned of falls in which "there was no pollination and there would be no fruit." […] The entomologist Stephen L. Buchmann and the crop ecologist Gary Paul Nabhan amplified Carson's warning in their 1996 book, The Forgotten Pollinators. They predicted fruitless falls unless our land-use patterns changed fast. But few people paid attention.

The unskilled man’s attempt at fixing his car engine was fruitless.

The fruitless woman desperately wanted to have children.

The first fruits of the season were eagerly sought after, and everybody was thankful that once more dread winter with its unvarying monotony of fruitless meals was a thing of the past.