One of the first steps you take when you are getting a good idea 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 Toronto you can determine when it's a good idea to plant bougainvillea by reviewing the USDA zone info.

Planting Calendar for Bougainvillea

Frost tolerance for bougainvillea:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You really shouldn't plant bougainvillea until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant bougainvillea in Toronto is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant bougainvillea and expect a good harvest is probably August. Any later than that and your bougainvillea may not have a chance to fully mature. You can get started a few weeks earlier by starting your bougainvillea indoors.

Last Frost Date

On average the last frost is on April 15 in Toronto. You should expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Toronto may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Toronto last frost occurs after April 15 be ready to protect your bougainvillea in the event of 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.