More than 90 percent of commercial date-farming acreage in the United States is in California, with the vast majority concentrated in a single region: the Coachella Valley in Riverside County. A smaller but significant share comes from the deserts of southwest Arizona. Together, these two areas make up nearly all domestic production, which totaled 49,200 tons in 2022.
The Coachella Valley: America’s Date Capital
Of California’s date acreage, roughly 95 percent sits in the Coachella Valley, a low-elevation stretch of the Sonoran Desert east of Los Angeles. The city of Indio, sometimes called the “Date Capital of the World,” has been the center of the industry since the USDA established a date research station there in 1907. About 70 producers operate in the region today.
The Coachella Valley offers exactly what date palms need: scorching summers, almost no rain during the ripening months, and very low humidity. Average daily highs in Indio climb above 100°F (38°C) from June through September, with July peaking around 107°F (41.4°C). Winter lows dip to about 39°F (3.7°C) in January, cold enough to give the palms a necessary rest period but rarely cold enough to kill them.
Arizona’s Role in Date Production
Southwest Arizona, particularly the Yuma area and parts of Maricopa County, shares the same Sonoran Desert climate that makes the Coachella Valley so productive. Commercial groves here are smaller in total acreage but grow the same varieties. Arizona’s contribution rounds out the domestic supply, and its farms benefit from similarly intense summer heat and dry air during harvest season.
Why Dates Need Desert Conditions
Date palms are remarkably heat-tolerant. They can endure temperatures as high as 133°F (56°C) for several days, as long as they receive irrigation. Growth begins when temperatures rise above 45°F (7°C), hits an optimum around 90°F (32°C), and stays strong up to about 104°F (40°C). The palms need massive amounts of accumulated heat over the growing season to ripen fruit fully. Researchers have calculated that dates require roughly 5,000 to 6,000 cumulative heat units (measured in degree-days Celsius) between flowering and harvest.
Heat alone isn’t enough, though. Low humidity during the final ripening stages is just as critical. Rain or even high humidity while the fruit is maturing causes rotting and fruit drop. This is why dates don’t thrive commercially in humid subtropical areas like Florida or the Gulf Coast, even when temperatures are warm enough. A light spring rain combined with humidity can also trigger fungal disease right before pollination, further limiting viable growing regions.
Varieties Grown in the US
Two varieties dominate the American market. Deglet Noor, a semi-dry date with a firm texture and mild sweetness, was among the earliest imports from North Africa and remains a staple. Medjool, a larger, softer, and richer date originally from Morocco, has surged in popularity and now commands premium prices. Other varieties grown on a smaller scale include Khadrawi, Zahidi, Hayany, and Halawy, all originally imported from the Middle East and North Africa beginning in the 1890s. It took about three decades of combined government research and private farming effort before these imports turned into a viable commercial industry.
Can Date Palms Grow Elsewhere in the US?
Date palms will survive in USDA Hardiness Zones 9 through 11, which covers much of the southern US, from Florida to coastal Texas to Southern California. In South Florida, ornamental date palms are popular landscape trees and can produce fruit. Smaller species like the Senegal date palm are cold hardy down to Zone 9B and grow well in coastal Central Florida.
Survival and commercial fruit production are very different things, however. Florida’s summer humidity and frequent rain make it nearly impossible to ripen high-quality dates outdoors. The fruit rots before it matures. Southern Texas faces similar humidity problems. Even in dry parts of Nevada and New Mexico, the growing season may not deliver enough cumulative heat. This is why commercial production stays locked in the low-desert corridors of southeast California and southwest Arizona, where six straight months of extreme heat meet bone-dry air. If you’re growing a date palm outside those regions, expect an ornamental tree rather than a reliable source of fruit.