Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Angleton should be used to figure out when you can plant blue throatwort.

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.

You really shouldn't plant blue throatwort until after the last frost because they require warm weather.

The earliest that you can plant blue throatwort in Angleton 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 blue throatwort and expect a good harvest is probably September. Any later than that and your blue throatwort may not have a chance to really do well. You can get started a few weeks earlier by starting your blue throatwort indoors.

Last Frost Date

The average date of last frost is February 15 in Angleton. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Angleton may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Angleton you get surprised by a frost after February 15 so just be sure to be ready to cover your blue throatwort if you have a surprise late frost.

USDA Zone Info for Angleton

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Angleton

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