The USDA Zone info is a great tool for gardeners to help us estimate your gardening 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 it's a good idea to plant maltese cross by referring to the USDA zone info for San Diego.

Planting Calendar for Maltese Cross

Frost tolerance for maltese cross:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Maltese Cross tend to make it in a little bit of cold which tells us that you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant maltese cross in San Diego 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 maltese cross and expect a good harvest is probably October. You probably don't want to wait any later than that or else your maltese cross may not have a chance to really do well. You can get started a little bit earlier by starting your maltese cross indoors.

Last Frost Date

On average the last frost is on January 31 in San Diego. You should expect an average low temperature of 35°F in the coldest months of winter.

Since the USDA zone info for San Diego may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in San Diego it frosts late in the year after January 31 be ready to cover your maltese cross if you have a late frost.

USDA Zone Info for San Diego

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 San Diego

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