Walnuts in their shell are fun to crack open, but did you know these nuts are loaded with nutrition? Walnuts are among the healthiest nuts. Just a handful each day can strengthen your heart, bones, and mind.


Fun Facts

  • Walnuts contain more Omega-3 fatty acids than any other nut. These fatty acids are good for the brain and the heart. Walnuts are also a good source of fiber and protein and in general are an excellent healthy food source.
  • Walnuts are probably the oldest tree food known to man. Ancient Greeks and Romans wrote about their use as medicine. Humans have been eating walnuts for at least 10,000 years.
  • The Greeks called walnuts karyon, which means “head.” The walnuts in their shells resemble a human head; the nut meat looks a little like a brain.
  • Walnuts came from Persia and Asia. They were brought to California in the late 1700s.
  • Walnuts aren’t just for cookies and baked goods. They’re delicious in salads or toasted with Parmesan cheese.
  • Almost all the walnuts eaten in the U.S. are grown in California.
  • Walnuts grow on trees and they’re harvested in the fall. There are more than 200 different kinds of walnuts.



  1. Tree food: food that grows on a tree
  2. Resemble: is similar to


Questions and Answers

Question: Are walnuts in their shells more nutritious than shelled walnuts?

Answer: Walnuts have the same nutritional value, whether they are shelled or sold in their shell. Shelled walnuts are more convenient.


Learn More

Watch videos on how to make walnut granola bars and even walnut butter.