Walnuts

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The buds shown on the walnut branches are male flowers called catkins
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UC scientists ask walnut trees: When do you need to be irrigated?

April 16th, 2025
By Trina Kleist
UC scientists are working with growers in Tehama, Butte, Lake, Amador, Contra Costa, Stanislaus and Yolo counties to test a new way of measuring the irrigation needs of walnut trees. Shackel and team think this new method will allow growers to use less water by not irrigating early in the season, and trees…
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