The USDA Zone info is a great tool for gardeners to help us estimate 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.

In Columbiana you can figure out when it's possible to plant iberis by reviewing the USDA zone info.

Planting Calendar for Iberis

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

Iberis are moderately cold tolerant which tells us that you can plant them earlier than other plants that might not handle the cold.

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

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Columbiana. In the coldest months of winter you should expect an average low temperature of -10°F.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Columbiana and it changes from year to year. Half of the time in Columbiana you get surprised by a frost after April 15 so always be ready to protect your iberis in the event of one of those late frosts.

USDA Zone Info for Columbiana

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 Columbiana

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