The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant black radish in Atascadero can be figured out 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.

Black radish are moderately cold tolerant which means that you can plant them earlier than plants that are more sensitive to the cold.

The earliest that you can plant black radish in Atascadero 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 really do well. You can get started a couple of weeks earlier by starting your black radish indoors.

Last Frost Date

On average the last frost is on February 15 in Atascadero. In the coldest months of winter you should expect an average low temperature of 20°F.

Just be sure to remember that USDA zone info for Atascadero may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Atascadero there is a last frost after February 15 be ready to protect your black radish in the event of a surprise late frost.

USDA Zone Info for Atascadero

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Atascadero

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