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.

The USDA zone info for Coppell can be read to determine when it's possible to plant blue throatwort.

Planting Calendar for Blue Throatwort

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

Since blue throatwort are not cold tolerant you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant blue throatwort in Coppell 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 blue throatwort and expect a good harvest is probably August. If you wait any later than that and your blue throatwort may not have a chance to really do well. Starting your blue throatwort indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on March 15 in Coppell. In the coldest months of winter you should expect an average low temperature of 10°F.

Remember that USDA zone info for Coppell is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Coppell it frosts late in the year after March 15 so be sure to be ready to cover your blue throatwort if you have a surprise late frost.

USDA Zone Info for Coppell

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 Coppell

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