The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Ottawa it's a good idea to determine when it's the best time to plant anise.

Planting Calendar for Anise

Frost tolerance for anise:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Anise can survive in a tiny bit of cold which means that you can plant them slightly earlier in the year than more sensitive plants.

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

The last month that you can plant anise and expect a good harvest is probably August. You probably don't want to wait any later than that or else your anise may not have a chance to really do well. You can get started a little bit earlier by starting your anise indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Ottawa. You should expect an average low temperature of -10°F in the coldest months of winter.

It's important to remember that USDA zone info for Ottawa may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Ottawa it frosts late in the year after April 15 be ready to cover your anise if you have one of those late frosts.

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.