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.

By referring to the USDA zone info for Chino Hills you will be able to determine when to plant oregano.

Planting Calendar for Oregano

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

Since oregano are one of those plants that can tolerate a little bit of cold weather you can plant them a little bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant oregano in Chino Hills 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 oregano and expect a good harvest is probably October. Any later than that and your oregano may not have a chance to really do well. You can get started a couple of weeks earlier by starting your oregano indoors.

Last Frost Date

On average all chance of frost has passed is on January 31 in Chino Hills. You can expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Chino Hills may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Chino Hills you get surprised by a frost after January 31 be ready to cover your oregano in the event of one of those late frosts.

USDA Zone Info for Chino Hills

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 Hills

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