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

A common way of figuring out when it's a good idea to plant radishes is to examine the USDA zone info for Piqua.

Planting Calendar for Radishes

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

Radishes do well in a bit of cold which tells us that you can plant them earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant radishes in Piqua 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. Any later than that and your radishes may not have a chance to grow to maturity. 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 Piqua. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Piqua is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Piqua you get surprised by a frost after April 15 so make sure that you are ready to protect your radishes in the event of one of those late frosts.

USDA Zone Info for Piqua

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 Piqua

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