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.

A common way of determining when it's the best time to plant candytuft is to use the USDA zone info for Ottawa.

Planting Calendar for Candytuft

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

You can plant candytuft just a bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant candytuft 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 candytuft and expect a good harvest is probably September. If you wait any later than that and your candytuft may not have a chance to fully mature. You can get started a little bit earlier by starting your candytuft indoors.

Last Frost Date

The average date of last frost is April 15 in Ottawa. You should expect an average low temperature of -10°F in the coldest months of winter.

Keep in mind that USDA zone info for Ottawa is an average and the actual date of last frost changes from year to year. Half of the time in Ottawa you get surprised by a frost after April 15 so be sure to be ready to cover your candytuft if you have a surprise late frost.

USDA Zone Info for Ottawa

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Ottawa

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