One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By reviewing the USDA zone info for Hereford you should be able to figure out when to plant alternaria.

Planting Calendar for Alternaria

Frost tolerance for alternaria:	Not tolerant of frost.
When to plant:	After the last frost.

Since alternaria require warm weather you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant alternaria in Hereford 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. Any later than that and your alternaria may not have a chance to fully mature. If you are starting your alternaria indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Hereford. You should expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Hereford is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Hereford last frost occurs after April 15 be ready to protect your alternaria in the event of a surprise late frost.

USDA Zone Info for Hereford

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 Hereford

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