The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Hartford City you can figure out when it's possible to plant blue throatwort by checking out 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 has passed.

Since blue throatwort require warm weather it's necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant blue throatwort in Hartford City 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. Any later than that and your blue throatwort may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your blue throatwort indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Hartford City. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Hartford City 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 Hartford City last frost occurs after April 15 so make sure that you are ready to protect your blue throatwort if you have a surprise late frost.

USDA Zone Info for Hartford City

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°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 -10°F.

Plants to Grow in Hartford City

You may be interested in your other planting guides for Hartford City.