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.

The best time to plant radishes in Jamestown should be determined by using the USDA zone info.

Planting Calendar for Radishes

Frost tolerance for radishes:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since radishes do well in cold you can plant them a lot earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant radishes in Jamestown is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant radishes and expect a good harvest is probably August. If you wait any later than that and your radishes may not have a chance to grow to maturity. Starting your radishes indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Jamestown the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -30°F.

Since the USDA zone info for Jamestown is an average the actual date of last frost changes from year to year. Half of the time in Jamestown you get a frost after May 15 so make sure that you are ready to cover your radishes in the event of one of those late frosts.

USDA Zone Info for Jamestown

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Jamestown

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