Bachelor of Science, Pennsylvania State University, 1979. Master of Science, Pennsylvania State University, 1983. Doctor of Philosophy, University New Hampshire, 1988.
Plant breeder, Peto Seed Company, Saticoy, California, 1988-1993; plant breeder, Alf Christianson Seed Company, Mount Vernon, Washington, since 1993.
Member American Society Horticultural Science, Entomological Society of America, Cucurbit Gene Stocks (curator), Cucurbit Genetics Cooperative (editor since 1989), Vegetable Breeders Working Group (steering committee since 1993), Pi Alpha Xi.
Married Thalia Ravlin, July 26, 1986.