Cool-season veggies grow best at temperatures averaging 15° cooler than those needed by warm season types.
Many have edible leaves or roots (lettuce, spinach, carrots, and radishes); others (artichokes, broccoli, cauliflower) are grown for their immature flowers. A few (peas, broad beans) produce edible seeds.
Most can endure short periods of frost.
For best results, you need to grow them to maturity in cool weather; otherwise, they can turn bitter tasting, or bolt to seed rather than producing edible parts
Cold crop vegetables:
- Brussels sprouts
- Onions (bulbing)
- Onions (bunching–standard onions harvested before they form bulbs).
- Bok choy