Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Whittier you can figure out when it's a good idea to plant sweet peas by using the USDA zone info.

Planting Calendar for Sweet Peas

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

Sweet Peas can survive in very little cold which means that you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant sweet peas in Whittier 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 peas and expect a good harvest is probably September. If you wait any later than that and your sweet peas may not have a chance to fully mature. Starting your sweet peas indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Whittier. You can expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Whittier is just an average the actual date of last frost is different every year. Half of the time in Whittier last frost occurs after January 31 so just be sure to be ready to protect your sweet peas if you have a surprise late frost.

USDA Zone Info for Whittier

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Whittier

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