One of the first steps you take when you are determining 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.

A way of making a decision about when to plant radishes is to use the USDA zone info for Dewitt.

Planting Calendar for Radishes

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

Radishes can survive in quite a bit of cold which tells us that you can plant them earlier in the year than more sensitive plants.

The earliest that you can plant radishes in Dewitt 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 radishes and expect a good harvest is probably September. You probably don't want to wait any later than that or else your radishes may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your radishes indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Dewitt. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Dewitt may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Dewitt you get surprised by a frost after April 15 so make sure that you are prepared to cover your radishes in the event of a surprise late frost.

USDA Zone Info for Dewitt

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 Dewitt

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