May 17 Events

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Walnut Day

Name: Walnut Day
Start: 2025-05-17T00:00:00+00:00
End: 2025-05-17
Location: US Holidays

Walnut Day is held on May 17. This event in the second decade of the month May is annual.

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99% of the commercial U.S. supply and 3/4 of the world trade of walnuts now come from California. Walnuts are the oldest known tree food — they date back to 10,000 BC! English walnuts (also known as Persian walnuts) originate in Central Asia and were introduced to California in the 1700s. California is home to nearly 325,000 acres of walnut orchards.

Walnut trees take about 5 years before they are considered productive, after which they produce an annual crop for 30 to 40 years. It takes about 170 days for a walnut to develop and mature on a tree.

Similar holidays and events, festivals and interesting facts

National Barbecue Day in USA on May 16;

Bread Festival in France on May 16;

National Mimosa Day in USA on May 16;

National Pizza Party Day in USA on May 16 (Held on the third Friday of May);

Biographers Day on May 16;

Love a Tree Day on May 16;

Sea Monkey Day on May 16 (They’re known as Artemia New York Ocean Science and go through anhydrobiosis, or hibernation when they are dried out. Then, with the right mixture of water and nutrients they can spring right back into life);