One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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 nicotiana in San Diego should be determined by reviewing the USDA zone info.

Planting Calendar for Nicotiana

Frost tolerance for nicotiana:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Nicotiana do not do well in cold weather which tells us that you must wait until it warms up after the last frost when the weather gets warmer before you can plant them.

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

Last Frost Date

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

It's important to remember that USDA zone info for San Diego is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in San Diego it frosts late in the year after January 31 so make sure that you are ready to protect your nicotiana 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.