Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Del Mar you can figure out when you can plant radishes by reviewing the USDA zone info.

Planting Calendar for Radishes

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

Since radishes do well in cold you can plant them a lot earlier in the year than other frost tender plants.

The earliest that you can plant radishes in Del Mar 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 radishes and expect a good harvest is probably October. If you wait any later than that and your radishes may not have a chance to really do well. You can get started a little bit earlier by starting your radishes indoors.

Last Frost Date

On average the last frost is on January 31 in Del Mar. You should expect an average low temperature of 30°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Del Mar may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Del Mar you get a frost after January 31 so make sure that you are ready to cover your radishes if you have a late frost.

USDA Zone Info for Del Mar

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 Del Mar

You may be interested in your other planting guides for Del Mar.