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

In Whittier you can figure out when it's the best time to plant brussels sprouts by looking at the USDA zone info.

Planting Calendar for Brussels Sprouts

Frost tolerance for brussels sprouts:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Brussels Sprouts are moderately cold tolerant which tells us that you can plant them earlier than plants that are more sensitive to the cold.

The earliest that you can plant brussels sprouts in Whittier 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 brussels sprouts and expect a good harvest is probably October. Any later than that and your brussels sprouts may not have a chance to fully mature. Starting your brussels sprouts indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Whittier the average date of last frost happens on January 31. In the coldest months of winter you should expect an average low temperature of 30°F.

Since the USDA zone info for Whittier is not always accurate the actual date of last frost changes from year to year. Half of the time in Whittier you get surprised by a frost after January 31 so make sure that you are prepared to protect your brussels sprouts if you have one of those late frosts.

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.