California's 2026-27 navel orange crop will reach 84 million cartons if the first official forecast holds — 4 million cartons above last year's initial estimate and 2 million above final 2025-26 production, according to the California Department of Food and Agriculture.

The California Navel Orange Objective Measurement Report puts fruit set at 388 per tree, up 3% from a year ago. Average fruit diameter came in at 2.176 inches, down slightly from the previous season. With bearing acreage estimated at 109,000, the forecast implies a yield of 771 cartons per acre. Each carton weighs roughly 40 pounds, and the report covers conventional, organic and specialty varieties including cara cara and blood oranges.

The survey-based figures come with a track record that growers watch closely. Last season's initial projection of 80 million cartons understated the final harvest, which reached 82 million. CDFA runs the surveys in cooperation with USDA's National Agricultural Statistics Service, with funding from the California citrus industry. Surveyors randomly selected trees across more than 750 groves — concentrated in Fresno, Tulare and Kern counties — and measured trunks, branches and fruit sizes from mid-June through mid-August.

The larger crop lands in a market still digesting oversupply. Navel prices lagged near the end of the past season precisely because of the bigger 2025-26 crop, which came in nearly 10 million cartons above 2024-25 despite steep production costs. According to TerrainAg, the average cost of farming navel oranges reached $4,215 per acre in 2025 — a jump of more than 170% from $1,555. Industry observers note that cost figure and the earlier benchmark reflect different survey windows, and both warrant scrutiny before being applied to margin calculations.

This season brought its own agronomic pressures. Warmer winter and spring conditions triggered unusually early and severe pest outbreaks, including California red scale and citrus thrips. Mild summer temperatures, however, supported fruit development, and neither the pests nor a warm spring appears to have dented the crop's size potential.

The longer arc of California citrus explains why the industry treats each forecast as provisional. Production hit 96 million cartons in 2010-11, then fell to 63 million in 2021-22, buffeted by weather, pest pressure, high input costs and trade disruptions.

California Citrus Mutual has urged growers to report conditions in their own orchards as the season progresses. The CCM marketing committee plans to review the CDFA report and compare it against the organization's own estimates before drawing conclusions about price prospects for a crop the industry hopes will command firmer returns.