One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Walnut you can determine when to plant arabis by reviewing 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.

You can plant arabis a lot earlier in the year because they are very cold tolerant.

The earliest that you can plant arabis in Walnut 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. You probably don't want to wait any later than that or else your arabis may not have a chance to grow to maturity. If you are starting your arabis indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Walnut. In the coldest months of winter you can expect an average low temperature of 30°F.

It's important to remember that USDA zone info for Walnut is an average and the actual date of last frost is different every year. Half of the time in Walnut it frosts late in the year after January 31 so make sure that you are prepared to protect your arabis in the event of a late frost.

USDA Zone Info for Walnut

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 Walnut

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