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 looking at the USDA zone info for Columbiana you will be able to estimate when it's the best time to plant jerusalem artichokes.

Planting Calendar for Jerusalem artichokes

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

Since jerusalem artichokes are moderately cold tolerant you can plant them a little bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant jerusalem artichokes 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 jerusalem artichokes and expect a good harvest is probably September. Any later than that and your jerusalem artichokes may not have a chance to fully mature. You can get started a few weeks earlier by starting your jerusalem artichokes 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.

It's important to remember that USDA zone info for Columbiana is just an average and the actual date of last frost will vary from year to year. Since half of the time in Columbiana last frost occurs after April 15 be ready to protect your jerusalem artichokes if you have a late frost.

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.