One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant carnation in San Bernardino can be estimated by checking out the USDA zone info.

Planting Calendar for Carnation

Frost tolerance for carnation:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Carnation do well in quite a bit of cold which means that you can plant them much earlier in the year than other plants that might not handle the cold.

The earliest that you can plant carnation in San Bernardino 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 carnation and expect a good harvest is probably October. If you wait any later than that and your carnation may not have a chance to fully mature. Starting your carnation indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on February 15 in San Bernardino. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for San Bernardino is an average the actual date of last frost will vary from year to year. Since half of the time in San Bernardino you get surprised by a frost after February 15 be ready to protect your carnation in the event of a late frost.

USDA Zone Info for San Bernardino

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in San Bernardino

You may be interested in your other planting guides for San Bernardino.