Rudolph Boysen: The Forgotten Hybridizer Behind the Boysenberry

A Cross Between Berries

Today is the anniversary of the death of the plant hybridizer Rudolph Boysen who died on this day in 1950.

In the 1910s and '20s, Boysen had been playing around with plant genetics. He worked on an 18-acre farm owned by John Lubbens in Napa Valley. On one June morning, Boysen took a walk along a creek bank to inspect some of his new berry creations. Boysen was astonished when he saw that one of the vines bore fruit that was almost two inches long. The fruit would become known to the world as the Boysenberry.
Boysenberries are similar to blackberries but have a larger, juicier, and sweeter fruit. The Boysenberry is a cross between the loganberry, the raspberry, and the blackberry. In 1927, Boysen advertised them as "the sensation of the 20th Century." 
The grower, Walter Knott, had been looking for new varieties of berries, and when he got some of Boysen's plants, he knew it was the berry he had been looking for over the past decade. Knott gave Boysen credit by naming the plant in his honor. But, Knott managed to make an empire for himself with the proceeds - establishing the world-renown Knotts Berry Farm. As for Boysen, he never earned a dime from the Boysenberry.
 
 
 


This post was featured on
The Daily Gardener podcast:

helping gardeners find their roots,
one story at a time
Rudolph Boysen
Rudolph Boysen

1 Comment

  1. Erwin Hodsdon on December 22, 2025 at 1:42 pm

    In 1958 or 1959 I moved to CA. With my wife and 3 children.
    My wife and I were 28 Years old and grew up in Maine.
    We were married for 60 years she died in 2011.
    I’m now 93.
    We loved going to Knotts berry farm and went there often and always eat at Mrs.Knott’s restaurant that was famous for delicious chicken dinners.
    I had the privilege of meting her.
    To this day I remember how kind she was, a real dear women I forget her name.

Leave a Comment