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 Alhambra you can determine when it's possible to plant echinacea by reviewing the USDA zone info.

Planting Calendar for Echinacea

Frost tolerance for echinacea:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Echinacea are barely cold tolerant which means that you can get them planted just a bit earlier than other frost tender plants.

The earliest that you can plant echinacea in Alhambra is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant echinacea and expect a good harvest is probably September. You probably don't want to wait any later than that or else your echinacea may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your echinacea indoors.

Last Frost Date

The average date of last frost is January 31 in Alhambra. You should expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Alhambra is not always accurate the actual date of last frost changes from year to year. Since half of the time in Alhambra last frost occurs after January 31 be ready to protect your echinacea if you have a surprise late frost.

USDA Zone Info for Alhambra

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 Alhambra

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