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.

In National City you can estimate when you can plant scaevola by checking out the USDA zone info.

Planting Calendar for Scaevola

Frost tolerance for scaevola:	Not tolerant of frost.
When to plant:	After the last frost.

It's a bad idea to plant scaevola until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant scaevola in National City 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 scaevola and expect a good harvest is probably September. You probably don't want to wait any later than that or else your scaevola may not have a chance to fully mature. You can get started a little bit earlier by starting your scaevola indoors.

Last Frost Date

In National City the average date of last frost happens on January 31. You can expect an average low temperature of 35°F in the coldest months of winter.

Since the USDA zone info for National City is not always accurate the actual date of last frost changes from year to year. Since half of the time in National City you get a frost after January 31 be ready to cover your scaevola if you have a late frost.

USDA Zone Info for National City

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 National City

You may be interested in your other planting guides for National City.