One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Toronto can be looked at to figure out when it's possible to plant veronica.

Planting Calendar for Veronica

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

Veronica do well in mild cold which tells us that you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant veronica in Toronto 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 veronica and expect a good harvest is probably September. If you wait any later than that and your veronica may not have a chance to really do well. You can get started a few weeks earlier by starting your veronica indoors.

Last Frost Date

The average date of last frost is April 15 in Toronto. In the coldest months of winter you should expect an average low temperature of -5°F.

Always keep in mind that USDA zone info for Toronto is an average and the actual date of last frost changes from year to year. Since half of the time in Toronto last frost occurs after April 15 be ready to cover your veronica if you have one of those late frosts.

USDA Zone Info for Toronto

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Toronto

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