Frost Dates & Planting Calendars in Maine
In Maine, the average last spring frost ranges from April 25 in Lewiston to May 16 in Sanford, and the average first fall frost from September 26 in Presque Isle to October 19 in Auburn. Pick a city for its full frost-date summary and 42-crop planting calendar.
| City | Last Spring Frost (typical) | First Fall Frost (typical) | Growing Season | USDA Zone |
|---|---|---|---|---|
| Portland | April 26 | October 15 | 170 days | 6a |
| Lewiston | April 25 | October 19 | 177 days | 5b |
| Bangor | May 4 | October 4 | 152 days | 5a |
| West Scarborough | April 26 | October 15 | 170 days | 6a |
| South Portland | April 26 | October 15 | 170 days | 6a |
| South Portland Gardens | April 26 | October 15 | 170 days | 6a |
| Auburn | April 25 | October 19 | 177 days | 5b |
| Biddeford | May 9 | October 3 | 146 days | 5b |
| Sanford | May 16 | September 30 | 136 days | 5b |
| Saco | May 9 | October 3 | 146 days | 5b |
| Augusta | April 27 | October 16 | 172 days | 5b |
| Westbrook | April 26 | October 15 | 170 days | 5b |
| Waterville | May 2 | October 10 | 159 days | 5b |
| Brunswick | May 2 | October 10 | 160 days | 5b |
| York Beach | May 1 | October 14 | 165 days | 6a |
| Wells Beach Station | May 9 | October 3 | 146 days | 6a |
| Orono | May 1 | October 6 | 157 days | 5a |
| Lisbon | May 15 | October 2 | 139 days | 5b |
| North Bath | May 10 | October 6 | 149 days | 5b |
| Brewer | May 4 | October 4 | 152 days | 5a |
| Presque Isle | May 14 | September 26 | 131 days | 4a |
When to Plant in Maine
- Tomatoes
- Peppers
- Eggplant
- Cucumbers
- Zucchini
- Winter Squash
- Pumpkins
- Watermelon
- Cantaloupe
- Corn
- Green Beans
- Peas
- Lettuce
- Spinach
- Kale
- Arugula
- Swiss Chard
- Broccoli
- Cauliflower
- Cabbage
- Brussels Sprouts
- Carrots
- Beets
- Radishes
- Turnips
- Onions
- Garlic
- Potatoes
- Sweet Potatoes
- Asparagus
- Basil
- Cilantro
- Parsley
- Dill
- Oregano
- Thyme
- Sunflowers
- Zinnias
- Marigolds
- Cosmos
- Nasturtiums
- Dahlias