The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant lenten rose in Ontario should be figured out by using the USDA zone info.

Planting Calendar for Lenten Rose

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

Lenten Rose are moderately cold tolerant which means that you can plant them earlier than other plants that might not handle the cold.

The earliest that you can plant lenten rose 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 lenten rose and expect a good harvest is probably October. If you wait any later than that and your lenten rose may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your lenten rose indoors.

Last Frost Date

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

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Ontario and it will vary from year to year. Since half of the time in Ontario there is a last frost after January 31 be ready to protect your lenten rose if you have a surprise 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.