One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of determining when it's the best time to plant rosemary is to check out the USDA zone info for Rancho Cordova.

Planting Calendar for Rosemary

Frost tolerance for rosemary:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Rosemary do ok in cold weather which tells us that you can plant them much earlier in the year than more sensitive plants.

The earliest that you can plant rosemary in Rancho Cordova 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 rosemary and expect a good harvest is probably October. You probably don't want to wait any later than that or else your rosemary may not have a chance to fully mature. Starting your rosemary indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Rancho Cordova the average date of last frost happens on February 15. In the coldest months of winter you can expect an average low temperature of 25°F.

Since the USDA zone info for Rancho Cordova may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Rancho Cordova it frosts late in the year after February 15 so make sure that you are ready to cover your rosemary in the event of a surprise late frost.

USDA Zone Info for Rancho Cordova

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Rancho Cordova

You may be interested in your other planting guides for Rancho Cordova.