(WALL STREET JOURNAL) — Grocery shoppers may soon need more green in their wallets to afford their next salad.

The cost of fresh produce is poised to jump in the coming months as a three-year drought in California shows few signs of abating, according to an Arizona State University study set to be released Wednesday.

The study found a head of lettuce could increase in price as much as 62 cents to $2.44; avocado prices could rise 35 cents to $1.60 each; and tomatoes could cost 45 cents more at $2.84 per pound. (The run-up in produce prices is in line with other projections showing that overall food cost gains are expected to accelerate this year.)

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