Carrots, usually a summer and fall crop, are grown year-round in California. Over 80% of domestically grown carrots are grown in California, with Michigan and Texas also producing significant yields.
Celery thrives in cooler conditions and is grown year-round in the U.S., with Michigan and California leading in production.
Collards are available year-round, but have a peak first harvest between January and April, as they grow best in cooler weather.
Over 90% of the commercial garlic in the U.S. is grown in California. This storage crop is available all year.
Like many cool weather greens, kale is grown year-round in California. In 2012, California grew more than any other state in the U.S., with Georgia coming in second and New Jersey third.