From the seeding perspective, it is necessary to think a season ahead. Therefore, the season begins in February in the greenhouse. Allium crops, such as onions, shallots, and leeks, are seeded within the first two weeks. Beets and greens are seeded for transplanting to the tunnel, providing an earlier crop. The first generation of outdoor beets are seeded for transplanting to provide an earlier crop than direct seeding. A few herbs and rainbow chard are also starting.
March, April, and May mean summer crops like tomatoes, peppers, corn, beans, squash, cucumbers, celery and okra. The corn and beans are started as seedlings for several successions to provide an earlier crop and to allow better germination in the warm greenhouse while outside lows are still chilly. The lettuce is seeded every week from March to August, when it goes to every few days for a couple of weeks due to slow growth in late Fall/early Winter. Celeriac, though mostly harvested closer to Fall, is seeded in the Spring due to its slow rate of growth.
June, July, and August brings Fall crops, like broccoli, cauliflower, cabbage, tat soi, bok choi, brussel sprouts, kale, collards, kohlrabi, and fennel. August is the end of the season from the standpoint of seedling production. Some tunnel greens are seeded at the end of the month. Then, the seeding season is over, just in time for the heavy harvesting that begins in September.