The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for National City it's a good idea to figure out when it's possible to plant pennisetum.

Planting Calendar for Pennisetum

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

You can plant pennisetum just a tiny bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant pennisetum 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 pennisetum and expect a good harvest is probably September. If you wait any later than that and your pennisetum may not have a chance to fully mature. You can get started a little bit earlier by starting your pennisetum indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in National City. In the coldest months of winter you should expect an average low temperature of 35°F.

Keep in mind that USDA zone info for National City is an average and the actual date of last frost is different every year. Half of the time in National City you get a frost after January 31 so make sure that you are ready to cover your pennisetum if you have one of those late frosts.

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.