One of the first steps you take when you are estimating 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.

It's possible to determine when it's possible to plant trifolium by using the USDA zone info for Fairbanks.

Planting Calendar for Trifolium

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

Since trifolium are one of those plants that can tolerate a tiny bit of cold weather you can plant them just a tiny bit earlier in the year than other frost tender plants.

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

The last month that you can plant trifolium and expect a good harvest is probably August. You probably don't want to wait any later than that or else your trifolium may not have a chance to grow to maturity. Starting your trifolium indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Fairbanks. In the coldest months of winter you should expect an average low temperature of -50°F.

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Fairbanks and it changes from year to year. Since half of the time in Fairbanks there is a last frost after May 15 be ready to cover your trifolium in the event of one of those late frosts.

USDA Zone Info for Fairbanks

Here is the info for USDA Zone 2a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	August 15
Lowest Expected Low	-50°F
Highest Expected Low	-45°F

This means that on a really cold year, the coldest it will get is -50°F. On most years you should be prepared to experience lows near -45°F.

Plants to Grow in Fairbanks

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