Q.Vegetable Gardening
What vegetables can I plant before last frost?
A.
Frost-tolerant crops: peas, spinach, lettuce, kale, broccoli, cabbage, carrots, parsnips, leeks, onions, radishes, turnips, beets, swiss chard. Plant 4-6 weeks before last frost. Many tolerate light frost; some (kale, brussels sprouts) actually improve in flavor after frost.
Frost-date pages cover your timing.