The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant bishop's weed in Whittier can be estimated by reviewing the USDA zone info.

Planting Calendar for Bishop's Weed

Frost tolerance for bishop's weed:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since bishop's weed are one of those plants that can tolerate quite a bit of cold weather you can plant them quite a bit earlier in the year than other frost tender plants.

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

Last Frost Date

On average the last frost has passed is on January 31 in Whittier. In the coldest months of winter you can expect an average low temperature of 30°F.

Just be sure to remember that USDA zone info for Whittier is just an average and the actual date of last frost will vary from year to year. Half of the time in Whittier it frosts late in the year after January 31 so make sure that you are prepared to protect your bishop's weed if you have a 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.