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The Southeastern Vegetable Extension Workers Group (SEVEW) is proud to offer you the 25th edition of the Southeastern U.S. 2024 Vegetable Crop Handbook. We are excited to provide growers, crop advisers, county educators, Extension agents, and specialists throughout the southeastern United States with this handbook. This handbook represents a joint effort among Extension specialists and researchers from 15 land-grant universities in the U.S. who work in the area of vegetable production. These specialists and researchers represent a wide array of disciplines: agricultural engineering, entomology, food safety, horticulture (vegetable production), plant pathology, postharvest physiology, soil science, and weed science.
The onion is a cool season crop that will withstand moderate freezes. It may be grown either by seeding directly in the field, or by setting transplants. North Carolina growers have an excellent market opportunity in June and July when very few onions are available. Yield will range from 400 to 800 (50-pound) sacks per acre depending on the year and cultural practices. A premium is paid for large onions during our harvest season.
Most commercial onions produced in North Carolina are seeded in the fall and harvested in mid- to late-June. Weed competition can reduce onion yields up to 96 percent, and weeds must be controlled throughout the growing season. Learn about the cultivation and herbicide options growers can use to keep onions weed-free in both wide and narrow rows.
This factsheet, part of the Insect and Related Pests of Vegetables publication, includes an identification key and descriptions of pests that affect onions.
