The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant blue throatwort in Arlington should be estimated by reviewing the USDA zone info.

Planting Calendar for Blue Throatwort

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

It's a bad idea to plant blue throatwort until after the last frost because they are not cold tolerant.

The earliest that you can plant blue throatwort in Arlington 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. You probably don't want to wait any later than that or else your blue throatwort may not have a chance to really do well. If you are starting your blue throatwort indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

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

Just be sure to remember that USDA zone info for Arlington is an average and the actual date of last frost will vary from year to year. Half of the time in Arlington you get surprised by a frost after March 15 so always be ready to protect your blue throatwort in the event of one of those late frosts.

USDA Zone Info for Arlington

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 Arlington

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