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.

By reviewing the USDA zone info for Cullman you should be able to estimate when it's possible to plant rock cress.

Planting Calendar for Rock Cress

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

You can plant rock cress a lot earlier in the year because they are very cold tolerant.

The earliest that you can plant rock cress in Cullman 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 rock cress and expect a good harvest is probably September. If you wait any later than that and your rock cress may not have a chance to really do well. You can get started a little bit earlier by starting your rock cress indoors.

Last Frost Date

The average date of last frost is April 15 in Cullman. In the coldest months of winter you should expect an average low temperature of 5°F.

Keep in mind that USDA zone info for Cullman is not always accurate and the actual date of last frost is different every year. Half of the time in Cullman it frosts late in the year after April 15 so just be sure to be ready to cover your rock cress in the event of a late frost.

USDA Zone Info for Cullman

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Cullman

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