Here is a list of vegetables you can plant in March in the Las Vegas Valley. The Las Vegas Valley is around 2000 foot elevation (650 meters). Lower elevations can start earlier than this. Higher elevations can delay planting a bit.
T= tramsplants are best
s= cam be started by seed
March
Bush beans (s), broccoli (s,T), brussels sprouts (T),
cabbage (T), carrots (s), sweet corn (s), eggplant late in the month (T), green
beans (s), pole beans (s), kale (s), kohlrabi (s), lettuce (s), onion sets,
onions (T), peppers late in the month (T), potatoes, radishes (s), spinach (s),
Swiss chard (s), tomato late in the month (T), turnip (s)
