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

The first chance to plant black radish in Santa Monica should be estimated by looking at the USDA zone info.

Planting Calendar for Black radish

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

You can plant black radish just a bit earlier in the year because they do well in moderate cold.

The earliest that you can plant black radish in Santa Monica 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 black radish and expect a good harvest is probably October. Any later than that and your black radish may not have a chance to grow to maturity. Starting your black radish indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Santa Monica the average date of last frost happens on January 31. It might get as low as 35°F during the coldest months of winter.

Since the USDA zone info for Santa Monica is an average the actual date of last frost changes from year to year. Half of the time in Santa Monica it frosts late in the year after January 31 so always be ready to cover your black radish if you have a surprise late frost.

USDA Zone Info for Santa Monica

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Santa Monica

You may be interested in your other planting guides for Santa Monica.