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

You should be able to figure out when you can plant bishop's weed by looking at the USDA zone info for Chino.

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 very cold tolerant you can plant them much earlier in the year than more sensitive plants.

The earliest that you can plant bishop's weed in Chino 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 fully mature. If you are starting your bishop's weed indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost is on January 31 in Chino. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for Chino may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Chino it frosts late in the year after January 31 be ready to protect your bishop's weed in the event of one of those late frosts.

USDA Zone Info for Chino

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 Chino

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