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

The USDA zone info for Carpentersville can be reviewed to determine when it's a good idea to plant black radish.

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 are moderately cold tolerant which means that you can plant them earlier than other plants that might not handle the cold.

The earliest that you can plant black radish in Carpentersville 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. You can get started a couple of weeks earlier by starting your black radish indoors.

Last Frost Date

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

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Carpentersville and it can change quite a bit from year to year. Half of the time in Carpentersville last frost occurs after April 15 so make sure that you are prepared to cover your black radish in the event of one of those late frosts.

USDA Zone Info for Carpentersville

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 Carpentersville

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