Before planting it is a good idea to find your USDA Zone info to estimate 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 Columbus you can estimate when it's possible to plant trachelium by using the USDA zone info.

Planting Calendar for Trachelium

Frost tolerance for trachelium:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

You should not plant trachelium until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant trachelium in Columbus 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 trachelium and expect a good harvest is probably August. Any later than that and your trachelium may not have a chance to really do well. Starting your trachelium indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Columbus the average date of last frost happens on March 15. In the coldest months of winter you should expect an average low temperature of 10°F.

Since the USDA zone info for Columbus may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Columbus it frosts late in the year after March 15 be ready to cover your trachelium if you have one of those late frosts.

USDA Zone Info for Columbus

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Columbus

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