California continues to produce a variety of vegetables during the winter months, thanks to its Mediterranean climate and diverse agricultural regions. While much of the country faces frost and reduced harvests, California maintains a steady supply of fresh produce.
Root crops such as carrots, beets, turnips, and radishes are among the most common vegetables grown in winter. These crops tolerate low temperatures well and maintain quality throughout the season. Other cold-tolerant vegetables include broccoli, cauliflower, and cabbage, which benefit from cooler weather.
Dr. Ana Pastrana León, horticulture and sustainable production systems advisor at UC Agriculture and Natural Resources (UC ANR), explained that the ability to plant and harvest in winter depends largely on location:
“The answer really depends a lot on the region where you are because vegetables respond differently to climate. For example, here in California during winter, most leafy vegetables and many others like onion, broccoli, cauliflower, carrot, etc., are produced in the arid zones of Imperial, Coachella and Blythe valleys where winter temperatures are mild without frost. In these places, yes they do plant in winter.”
Pastrana also noted that winter can bring challenges for growers. Periods of high humidity combined with relatively warm temperatures may lead to diseases such as mildew or root rot.
Extension specialists from UC ANR emphasize that many cool-season crops develop better flavor and texture during winter while experiencing fewer pest problems. This allows California to remain a key supplier of fresh food year-round.
To manage disease risks during variable winter conditions, Pastrana recommends several practices: improving air circulation around plants; avoiding excessive irrigation by watering in the morning; using disease-tolerant varieties; and rotating crops to reduce pathogen pressure.
Typical winter vegetables grown in California include asparagus, broccoli, cabbage, carrots, cauliflower, fava beans, garlic, leeks, lettuce, mustard greens, onions, peas, potatoes and spinach.
UC ANR provides research-based information across all 58 counties in California through cooperative extension programs focused on agriculture and natural resources.
For more information about gardening or specific crops during the winter season in California or to connect with local Master Gardeners programs run by UC ANR across all counties in the state visit ucanr.edu.
More news from UC ANR is available at ucanr.edu/blog/noticias.