Planting Calendar for Perth, ON

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 Transplant Seedlings 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!

33% probability of frost free after May 22 (at DRUMMOND CENTRE, ON climate station).
Crop Based on Frost Dates   Based on Moon Dates
Start Seeds IndoorsTransplant SeedlingsStart Seeds Outdoors
Beans May 29-Jun 19
Jun 3-17
Beets May 8-29
May 19-29
Broccoli Apr 10-24
Apr 10-19
May 1-22
May 4-18
Brussels Sprouts Apr 10-24
Apr 10-19
Apr 24-May 15
May 4-15
Cabbage Mar 27-Apr 10
Apr 5-10
Apr 24-May 8
May 4- 8
Cantaloupe Apr 24-May 1
Jun 5-26
Jun 5-17
Carrots Apr 17-May 1
Apr 20-May 1
Cauliflower Apr 10-24
Apr 10-19
Apr 24-May 8
May 4- 8
Celery Mar 13-27
Mar 13-20
May 29-Jun 12
Jun 3-12
Collards Apr 10-24
Apr 10-19
Apr 24-May 15
May 4-15
Corn May 22-Jun 5
Jun 3- 5
Cucumbers Apr 24-May 1
Jun 5-26
Jun 5-17
Eggplants Mar 13-27
Mar 13-20
Jun 5-26
Jun 5-17
Kale Apr 10-24
Apr 10-19
Apr 24-May 15
May 4-15
Kohlrabi Apr 24-May 15
May 4-15
Leeks Mar 13-27
Mar 13-20
Apr 24-May 15
May 4-15
Lettuce Apr 10-24
Apr 10-19
May 8-Jun 5
May 8-18, Jun 3- 5
Okra Jun 5-19
Jun 5-17
Onions Apr 24-May 15
Apr 24-May 3
Parsnips May 1-22
May 1- 3, May 19-22
Peas Apr 10-May 1
Apr 10-19
Peppers Mar 13-27
Mar 13-20
Jun 5-26
Jun 5-17
Potatoes May 15-Jun 5
May 19-Jun 2
Pumpkins Apr 24-May 8
May 4- 8
Jun 5-26
Jun 5-17
Radishes Mar 27-Apr 17
Mar 27-Apr 4
Spinach Apr 10-May 1
Apr 10-19
Squash Apr 24-May 8
May 4- 8
Jun 5-26
Jun 5-17
Sweet Potatoes Apr 24-May 1
Apr 24-May 1
Jun 5-26
Jun 18-26
Swiss Chard Apr 10-24
Apr 10-19
May 1- 8
May 4- 8
Tomatoes Mar 27-Apr 10
Apr 5-10
May 29-Jun 19
Jun 3-17
Turnips Apr 24-May 15
Apr 24-May 3
Watermelons Apr 24-May 1
Jun 5-26
Jun 5-17