The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. 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 Ottawa should be looked at to estimate when you can plant painted daisies.

Planting Calendar for Painted Daisies

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

Painted Daisies do ok in some cold which tells us that you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant painted daisies in Ottawa 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 painted daisies and expect a good harvest is probably September. You probably don't want to wait any later than that or else your painted daisies may not have a chance to fully mature. If you are starting your painted daisies indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Ottawa 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.

Since the USDA zone info for Ottawa is just an average the actual date of last frost is different every year. Since half of the time in Ottawa there is a last frost after April 15 be ready to protect your painted daisies if you have a late frost.

USDA Zone Info for Ottawa

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 Ottawa

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