What is meant by biennial, and which vegetables are classified as biennial vegetables?

Gardens & Landscapes June 15, 2007 Print Friendly and PDF
Biennial vegetables normally require two growing seasons from seed to flowering. Biennial vegetables include beets, Brussels sprouts, cabbage, carrots, cauliflower, celery, chard, collard, endive, kale, kohlrabi, leek, onion, parsley, parsnip, rutabaga, salsify, and turnip. When young biennial plants are subjected to cold weather early during their growth, they may produce seed the first season.

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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.