Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to figure out when you can plant creeping zinnia by looking at the USDA zone info for Atascadero.

Planting Calendar for Creeping Zinnia

Frost tolerance for creeping zinnia:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Creeping Zinnia are barely cold tolerant which means that you can plant them slightly earlier than other frost tender plants.

The earliest that you can plant creeping zinnia in Atascadero is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant creeping zinnia and expect a good harvest is probably September. You probably don't want to wait any later than that or else your creeping zinnia may not have a chance to grow to maturity. You can get started a little bit earlier by starting your creeping zinnia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Atascadero. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Atascadero is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Atascadero last frost occurs after February 15 be ready to cover your creeping zinnia in the event of one of those late frosts.

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.