Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Columbia you can determine when to plant tarragon by reviewing the USDA zone info.

Planting Calendar for Tarragon

Frost tolerance for tarragon:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant tarragon a bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant tarragon in Columbia is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant tarragon and expect a good harvest is probably August. You probably don't want to wait any later than that or else your tarragon may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your tarragon indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Columbia may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Columbia there is a last frost after April 15 so just be sure to be ready to protect your tarragon 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.