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

You can figure out when it's the best time to plant blue throatwort in Harrah by looking at the USDA zone info.

Planting Calendar for Blue Throatwort

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

You can not plant blue throatwort until after the last frost because they require warm weather.

The earliest that you can plant blue throatwort in Harrah 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. Starting your blue throatwort indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Harrah. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Harrah may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Harrah last frost occurs after April 15 so make sure that you are prepared to protect your blue throatwort if you have one of those late frosts.

USDA Zone Info for Harrah

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Harrah

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