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

In Redlands you can figure out when it's the best time to plant arabis by using the USDA zone info.

Planting Calendar for Arabis

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

Arabis can survive in cold weather which means that you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant arabis in Redlands 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 arabis and expect a good harvest is probably October. If you wait any later than that and your arabis may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your arabis indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Redlands. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Redlands is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Redlands you get a frost after February 15 so make sure that you are ready to protect your arabis in the event of one of those late frosts.

USDA Zone Info for Redlands

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 Redlands

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