One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to estimate when you can plant cabbage by using the USDA zone info for Ontario.

Planting Calendar for Cabbage

Frost tolerance for cabbage:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Cabbage do ok in some cold which means that you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant cabbage in Ontario is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant cabbage and expect a good harvest is probably October. If you wait any later than that and your cabbage may not have a chance to grow to maturity. Starting your cabbage indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on January 31 in Ontario. In the coldest months of winter you should expect an average low temperature of 30°F.

Remember that USDA zone info for Ontario may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Ontario you get surprised by a frost after January 31 so always be ready to cover your cabbage if you have one of those late frosts.

USDA Zone Info for Ontario

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Ontario

You may be interested in your other planting guides for Ontario.