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.

In Sonora you can determine when it's the best time to plant chamomile by checking out the USDA zone info.

Planting Calendar for Chamomile

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

Since chamomile do well in moderate cold you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant chamomile in Sonora 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 chamomile and expect a good harvest is probably October. If you wait any later than that and your chamomile may not have a chance to grow to maturity. If you are starting your chamomile indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Sonora the average date of last frost happens on February 15. You can expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Sonora 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 Sonora you get surprised by a frost after February 15 so be sure to be ready to protect your chamomile in the event of a late frost.

USDA Zone Info for Sonora

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Sonora

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