The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Columbia can be read to figure out when it's a good idea to plant basil.

Planting Calendar for Basil

Frost tolerance for basil:	Not tolerant of frost.
When to plant:	After the last frost.

Since basil are not cold tolerant it is important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant basil in Columbia 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 basil and expect a good harvest is probably August. Any later than that and your basil may not have a chance to fully mature. Starting your basil indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Columbia. In the coldest months of winter you can expect an average low temperature of 0°F.

Just be sure to remember that USDA zone info for Columbia is an average and the actual date of last frost is different every year. Half of the time in Columbia you get a frost after April 15 so make sure that you are ready to protect your basil in the event of a surprise late frost.

USDA Zone Info for Columbia

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Columbia

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