'DaisySL is similar to many other selections we evaluated, but it stood out from the rest, and we knew right off that we had something special,' Williams said.

Still, they continued their evaluations of DaisySL and waited eight years from when they saw the first fruit on a single tree to announce it as a new variety ready for UC-R to release.

In September UC-R will release DaisySL for propagation by California citrus nurseries that have purchased licences to propagate and sell the variety in the state.

Roose and Williams estimate it will be five years before the first DaisySL fruit arrives in stores.