Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can figure out when to plant maltese cross in Ontario by using the USDA zone info.

Planting Calendar for Maltese Cross

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

Maltese Cross are moderately cold tolerant which tells us that you can plant them earlier than more sensitive plants.

The earliest that you can plant maltese cross 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 maltese cross and expect a good harvest is probably September. You probably don't want to wait any later than that or else your maltese cross may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your maltese cross indoors.

Last Frost Date

In Ontario the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -15°F.

It's important to remember that USDA zone info for Ontario may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Ontario you get a frost after April 15 be ready to protect your maltese cross if you have a surprise late frost.

USDA Zone Info for Ontario

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Ontario

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