When can I plant Black radish in Zone 1b

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

The first opportunity to plant black radish in Zone 1b can be determined by referring to the USDA zone info.


Planting Calendar for Black radish

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

Black radish do well in some cold which means that you can plant them a little bit earlier in the year than plants that are more sensitive to the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant black radish
Possibly ok, but a risky time to plant black radish
Probably not a good time to plant black radish

The earliest that you can plant black radish in Zone 1b 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 black radish and expect a good harvest is probably July. If you wait any later than that and your black radish may not have a chance to fully mature. You can get started a little bit earlier by starting your black radish indoors.

Last Frost Date

On average the last frost has passed is on June 15 in Zone 1b. We should expect an average low temperature of -55°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Zone 1b is not always accurate and our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 1b we get surprised by a frost after June 15 be ready to cover your black radish if we have one of those late frosts.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.