One of the first steps you take when you are getting a good idea your gardening schedule is find your 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.

You should be able to estimate when it's the best time to plant black radish by reviewing the USDA zone info for Algonac.

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 well in some 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 Algonac 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. Any later than that and your black radish may not have a chance to grow to maturity. Starting your black radish indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Algonac. You should expect an average low temperature of -10°F in the coldest months of winter.

Keep in mind that USDA zone info for Algonac is not always accurate and the actual date of last frost is different every year. Half of the time in Algonac you get a frost after April 15 so make sure that you are ready to cover your black radish in the event of a surprise late frost.

USDA Zone Info for Algonac

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 Algonac

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