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He went from standard citrus, apricot and avocado to a more exotic collection, adding finger limes, valentine pummelos, jaboticaba, cherimoya and pawpaw.

"The place was greener, not only mangroves, but all by the shoreline - there were pawpaw trees, palm trees and more. But during the spills, the destruction has polluted everywhere," the 50-year-old mother of six said.

"I don't think any of us expected it to be the next kiwi at Kroger," said Kirk Pomper, a horticulturist and research lead of Kentucky State University's pawpaw research program.

Tristan Shaw pointed at a young pawpaw, a species that is self-incompatible and cannot use pollen produced on a given tree to pollinate flowers of the same plant.

What worked for chickpeas may not work for pawpaw and other fruit species.