A 7-year-old fruitless mulberry in Southern CA high desert leafed out then shriveled. Likely causes: late winter drought as roots activated, lawn herbicide uptake (broadleaf weed killers/weed-and-feed), nitrogen deficiency, or irrigation changes.
Deep water weekly (not shallow sprinkling). Apply 2 in compost + 2 in mulch in a 4-ft radius (no volcano mulching). Eliminate herbicide use near tree. Assess irrigation and fertilization practices.
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