One of the first steps you take when you are determining 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.

In Ontario you can estimate when it's the best time to plant abutilon by referring to the USDA zone info.

Planting Calendar for Abutilon

Frost tolerance for abutilon:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since abutilon do not do well in cold weather you really should wait until after all chance of frost has passed before you can plant them.

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

The last month that you can plant abutilon and expect a good harvest is probably September. If you wait any later than that and your abutilon may not have a chance to really do well. If you are starting your abutilon indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Ontario. You can expect an average low temperature of 30°F in the coldest months of winter.

Always keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Ontario and it changes from year to year. Half of the time in Ontario last frost occurs after January 31 so make sure that you are ready to cover your abutilon if you have a late frost.

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.