One of the best tools that you have as gardeners to help us figure out 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.

One way of figuring out when it's a good idea to plant sweet corn is to examine the USDA zone info for Patterson.

Planting Calendar for Sweet corn

Frost tolerance for sweet corn:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Sweet corn are one of those plants that can tolerate a tiny bit of cold weather which means that you can start planting them slightly earlier than plants that are more sensitive to the cold.

The earliest that you can plant sweet corn in Patterson is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant sweet corn and expect a good harvest is probably September. Any later than that and your sweet corn may not have a chance to really do well. You can get started a couple of weeks earlier by starting your sweet corn indoors.

Last Frost Date

On average the last frost is on February 15 in Patterson. In the coldest months of winter you should expect an average low temperature of 20°F.

Since the USDA zone info for Patterson is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Patterson you get a frost after February 15 be ready to protect your sweet corn if you have a surprise late frost.

USDA Zone Info for Patterson

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Patterson

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