One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to estimate when it's possible to plant black eyed susans by using the USDA zone info for Fairfield.

Planting Calendar for Black Eyed Susans

Frost tolerance for black eyed susans:	Not tolerant of frost.
When to plant:	After the last frost.

It's probably a bad idea to plant black eyed susans until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant black eyed susans in Fairfield 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 black eyed susans and expect a good harvest is probably August. Any later than that and your black eyed susans may not have a chance to grow to maturity. If you are starting your black eyed susans indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Fairfield. You should expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Fairfield is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Fairfield you get a frost after March 15 so just be sure to be ready to cover your black eyed susans if you have a surprise late frost.

USDA Zone Info for Fairfield

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 Fairfield

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