The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to figure out when it's possible to plant cardinal flower by checking out the USDA zone info for Cullman.

Planting Calendar for Cardinal Flower

Frost tolerance for cardinal flower:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You should not plant cardinal flower until after the last frost because they do not do well in cold weather.

The earliest that you can plant cardinal flower in Cullman is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant cardinal flower and expect a good harvest is probably August. If you wait any later than that and your cardinal flower may not have a chance to fully mature. Starting your cardinal flower indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Cullman the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of 5°F.

Remember that USDA zone info for Cullman is just an average and the actual date of last frost is different every year. Since half of the time in Cullman it frosts late in the year after April 15 be ready to protect your cardinal flower in the event of a surprise 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.