Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Napa you can estimate when it's a good idea to plant pea by referring to the USDA zone info.

Planting Calendar for Pea

Frost tolerance for pea:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Pea are very cold tolerant which means that you can plant them a quite a bit earlier than more sensitive plants.

The earliest that you can plant pea in Napa is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant pea and expect a good harvest is probably October. If you wait any later than that and your pea may not have a chance to grow to maturity. You can get started a little bit earlier by starting your pea indoors.

Last Frost Date

On average all chance of frost has passed is on February 15 in Napa. In the coldest months of winter you can expect an average low temperature of 25°F.

Just be sure to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Napa and it is different every year. Half of the time in Napa there is a last frost after February 15 so always be ready to cover your pea if you have one of those late frosts.

USDA Zone Info for Napa

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 Napa

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