One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to determine when to plant black radish by looking at the USDA zone info for Fairbanks.

Planting Calendar for Black radish

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

Black radish do ok in a little bit of cold which means that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant black radish in Fairbanks 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 black radish and expect a good harvest is probably August. Any later than that and your black radish may not have a chance to fully mature. If you are starting your black radish indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Always keep in mind that USDA zone info for Fairbanks is an average and the actual date of last frost will vary from year to year. Half of the time in Fairbanks you get surprised by a frost after May 15 so always be ready to protect your black radish if you have a surprise late frost.

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.