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.

A common way of getting a good idea when it's possible to plant alternaria is to check out the USDA zone info for Benicia.

Planting Calendar for Alternaria

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

Since alternaria are not cold tolerant it's necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant alternaria in Benicia is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant alternaria and expect a good harvest is probably September. If you wait any later than that and your alternaria may not have a chance to really do well. Starting your alternaria indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Benicia the average date of last frost happens on February 15. In the coldest months of winter you can expect an average low temperature of 25°F.

Keep in mind that USDA zone info for Benicia is not always accurate and the actual date of last frost is different every year. Since half of the time in Benicia you get surprised by a frost after February 15 be ready to protect your alternaria if you have a surprise late frost.

USDA Zone Info for Benicia

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Benicia

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