Planting Calendar for Houlton, ME

On average, your last spring frost occurs on June 3 (at HOULTON INTL AP, ME climate station).
Crop Based on Frost Dates   Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds Outdoors
Bell Peppers Mar 25-Apr 8
Mar 25-Apr 7
Jun 17-Jul 8
Jun 21-Jul 4
N/A
Celery Mar 25-Apr 8
Mar 25-Apr 7
Jun 10-24
Jun 21-24
N/A
Eggplants Mar 25-Apr 8
Mar 25-Apr 7
Jun 17-Jul 8
Jun 21-Jul 4
N/A
Leeks Mar 25-Apr 8
Mar 25-Apr 7
May 6-27
May 6- 7, May 22-27
N/A
Cabbage Apr 8-22
Apr 22
May 6-20
May 6- 7
N/A
RadishesN/AN/A Apr 8-29
Apr 8-21
Tomatoes Apr 8-22
Apr 22
Jun 10-Jul 1
Jun 21-Jul 1
N/A
Broccoli Apr 22-May 6
Apr 22-May 6
May 13-Jun 3
May 22-Jun 3
N/A
Brussels Sprouts Apr 22-May 6
Apr 22-May 6
May 6-27
May 6- 7, May 22-27
N/A
Cauliflower Apr 22-May 6
Apr 22-May 6
May 6-20
May 6- 7
N/A
Collards Apr 22-May 6
Apr 22-May 6
May 6-27
May 6- 7, May 22-27
N/A
Lettuce Apr 22-May 6
Apr 22-May 6
May 20-Jun 17
May 22-Jun 5
N/A
PeasN/AN/A Apr 22-May 13
Apr 22-May 7
SpinachN/AN/A Apr 22-May 13
Apr 22-May 7
Swiss Chard Apr 22-May 6
Apr 22-May 6
May 13-20
N/A
CarrotsN/AN/A Apr 29-May 13
May 8-13
Cantaloupes May 6-13
May 6- 7
Jun 17-Jul 8
Jun 21-Jul 4
N/A
Cucumbers May 6-13
May 6- 7
Jun 17-Jul 8
Jun 21-Jul 4
N/A
KohlrabiN/AN/A May 6-27
May 6- 7, May 22-27
OnionsN/AN/A May 6-27
May 8-21
Pumpkins May 6-20
May 6- 7
Jun 17-Jul 8
Jun 21-Jul 4
N/A
Squash (Zucchini) May 6-20
May 6- 7
Jun 17-Jul 8
Jun 21-Jul 4
N/A
Sweet Potatoes May 6-13
May 8-13
Jun 17-Jul 8
Jun 17-20, Jul 5- 8
N/A
TurnipsN/AN/A May 6-27
May 8-21
Watermelons May 6-13
May 6- 7
Jun 17-Jul 8
Jun 21-Jul 4
N/A
ParsnipsN/AN/A May 13-Jun 3
May 13-21
BeetsN/AN/A May 20-Jun 10
May 20-21, Jun 6-10
PotatoesN/AN/A May 27-Jun 17
Jun 6-17
CornN/AN/A Jun 3-17
Jun 3- 5
BeansN/AN/A Jun 10-Jul 1
Jun 21-Jul 1
OkraN/AN/A Jun 17-Jul 1
Jun 21-Jul 1

Find the best dates for planting vegetables and fruit in your garden! Our free planting calendar calculates the best time to start seeds indoors and outdoors, as well as when to plant young plants outside.

How to Use the Planting Calendar

Simply put, a planting calendar is a guide that tells you the best time to start planting your garden. Most planting calendars are based on frost dates, which dictate when you should start seeds and when it's safe to plant outdoors in your area. Our planting calendar is customized to your location in order to give you the most accurate information possible.

On the planting calendar below, please note:

  • The Frost Dates indicate the best planting dates based on your local average frost dates. Average frost dates are based on historical weather data and are the planting guideline used by most gardeners.
  • The Moon Dates indicate the best planting dates based on your local frost dates and Moon phases. Planting by the Moon is considered a more traditional technique.
  • The Plant Seedlings or Transplants dates indicate the best time to plant young plants outdoors. This includes plants grown from seed at home and plants bought from a nursery. Although frost dates are a good way to know approximately when to start gardening, always check a local forecast before planting outdoors!
  • When no dates appear in the chart, that starting method is not recommended for that particular plant. Some crops do best when started outdoors rather than indoors, while others prefer the opposite.
  • Click on the name of a plant to see our corresponding Growing Guide.

To plan your garden more accurately in the future, keep a record of your garden's conditions each year, including frost dates and seed-starting dates!