A Planting Guide for Vegetables in Maine

March 1	Start indoors: celery, celeriac (3/1 to 3/15), onions and leeks (2/20 to 3/15), kale
March 14	Start indoors: leaf and head lettuce
March 21	Start indoors: peppers
April 1	Start indoors: broccoli, Brussels sprouts, cabbage, cauliflower, eggplant
April 14	Start indoors: tomatoes Start outdoors: beets, carrots, leaf and head lettuce, peas, parsnips (4/15 to 5/15), radishes, shallots (4/15 to 5/30), spinach, turnips, bunching onions for summer harvest (4/15 to 5/1), onions from seeds or sets Transplant out: leaf and head lettuce, onion seedlings
May 1	Start indoors: melons, squashes, cucumbers Start outdoors: beets, carrots, leaf and head lettuce, peas, radishes, spinach, Swiss chard (5/1 to 5/31), turnips Transplant out: broccoli, Brussels sprouts, cabbage, cauliflower (5/1 to 5/15 when 4 to 5 weeks old), leeks (5/1 to 5/15)
May 14	Start indoors: broccoli, Brussels sprouts, cabbage, cauliflower for fall crop Start outdoors: beets, leaf and head lettuce, peas, radishes, spinach, turnip
June 1	Start outdoors: bush green beans, pole beans, beets, Chinese cabbage (5/30 to 7/30), carrots, corn, leaf and head lettuce, peas, potatoes, radishes, spinach, turnip Transplant out: celery and celeriac (6/1 to 6/15), tomatoes Transplant or direct seed out: melons, squashes, cucumbers
June 14	Start outdoors: beets, corn, leaf and head lettuce, peas, radishes, rutabaga, spinach, turnip Transplant out: 4/1 sowing of eggplant, 5/15 sowing of broccoli, Brussels sprouts, cabbage, cauliflower
June 21	Start outdoors: bush green beans, carrots
July 1	Start outdoors: beets, corn (short season varieties), kale, leaf and head lettuce, peas, radishes, spinach, turnip
July 14	Start outdoors: bush green beans, beets, carrots, leaf and head lettuce, peas, radishes, spinach, turnip; hardy bunching onions for fall and spring harvest (7/15 to 8/15)
August 1	Start outdoors: beets, leaf and head lettuce, peas, radishes, spinach, turnip
August 14	Start outdoors: leaf and head lettuce, radishes, spinach, turnip
September 1	Start outdoors: leaf lettuce, radishes, shallots for spring green onions, spinach (sow now for fall crop and now until ground freezes for spring crop, well mulched over winter)
October 1	Start outdoors: garlic