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

You can determine when to plant plectranthus in National City by checking out the USDA zone info.

Planting Calendar for Plectranthus

Frost tolerance for plectranthus:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's probably not a good idea to plant plectranthus until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant plectranthus 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 plectranthus and expect a good harvest is probably September. Any later than that and your plectranthus may not have a chance to really do well. If you are starting your plectranthus indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

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

It's important to remember that USDA zone info for National City is an average and the actual date of last frost is different every year. Since half of the time in National City you get surprised by a frost after January 31 be ready to cover your plectranthus if you have a surprise 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.