Middle Georgia (Augusta) here. January is the only month I do not plant. Onions and English peas are planted in November , December for spring harvest. Romaine lettuce also over wintered. Start new Cabbage, cauliflower, broccoli in cold frames beginning of February. Irish potatoes go in around the middle of February as does a second planting of English peas. March gets the third plant of English peas, beets, radishes, pak choi, lettuce etc. when spring arrives, the brassicas are transplanted from the cold frames and the planting of early summer vegetables snap beans, squash, watermelons, sweet corn, cantaloupes, cucumbers etc. Tomatoes, eggplant and peppers are started inside around the first of March for tramsplant in April. May involves second plantings of early summer vegetables, plus the beginning of hot summer vegetables lima beans, edible soy beans, cowpeas, okra. Second planting of cowpeas and limas in June.
By the way, most early varieties of cauliflower do well in midlle Georgia as a spring planting ( tranplanted in early April)
Montana
Fremont
Snow Crown
White Passion
Rushmore
Montana 
Fremont Snow Crown White Passion Rushmore
