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.

The USDA zone info for Fairfield should be read to figure out when you can plant alternaria.

Planting Calendar for Alternaria

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

It's probably not a good idea to plant alternaria until after the last frost because they are not cold tolerant.

The earliest that you can plant alternaria 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 alternaria and expect a good harvest is probably August. You probably don't want to wait any later than that or else your alternaria may not have a chance to fully mature. You can get started a little bit earlier by starting your alternaria indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Fairfield. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Fairfield is an average the actual date of last frost will vary from year to year. Since half of the time in Fairfield you get a frost after March 15 be ready to cover your alternaria in the event of one of those late frosts.

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.