One of the best tools that you have as gardeners to help us figure out 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.

You can determine when it's possible to plant radicchio in Petal by reviewing the USDA zone info.

Planting Calendar for Radicchio

Frost tolerance for radicchio:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Radicchio can survive in a little bit of cold which means that you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant radicchio in Petal 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 radicchio and expect a good harvest is probably September. If you wait any later than that and your radicchio may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your radicchio indoors.

Last Frost Date

The average date of last frost is March 15 in Petal. In the coldest months of winter you should expect an average low temperature of 15°F.

It's important to remember that USDA zone info for Petal may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Petal there is a last frost after March 15 be ready to cover your radicchio if you have a late frost.

USDA Zone Info for Petal

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Petal

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