One of the first steps you take when you are making a decision about 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.

In Franklin you can estimate when it's possible to plant black radish by referring to the USDA zone info.

Planting Calendar for Black radish

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

Since black radish do well in moderate cold you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant black radish in Franklin 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 black radish and expect a good harvest is probably September. You probably don't want to wait any later than that or else your black radish may not have a chance to fully mature. Starting your black radish indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Franklin. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Franklin may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Franklin you get a frost after April 15 so be sure to be ready to cover your black radish in the event of one of those late frosts.

USDA Zone Info for Franklin

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 Franklin

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