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.

You can figure out when it's a good idea to plant trachelium in Austin by reviewing the USDA zone info.

Planting Calendar for Trachelium

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

It's not a good idea to plant trachelium until after the last frost because they do not do well in cold weather.

The earliest that you can plant trachelium in Austin 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 grow to maturity. Starting your trachelium indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Austin. You should expect an average low temperature of 15°F in the coldest months of winter.

Remember that USDA zone info for Austin may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Austin last frost occurs after March 15 so always be ready to cover your trachelium in the event of a late frost.

USDA Zone Info for Austin

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Austin

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