The USDA Zone info is a great tool for gardeners to help us determine 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.

The best time to plant flowering tobacco in San Diego should be determined by referring to the USDA zone info.

Planting Calendar for Flowering Tobacco

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

Since flowering tobacco are not cold tolerant you need to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant flowering tobacco in San Diego is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant flowering tobacco and expect a good harvest is probably September. If you wait any later than that and your flowering tobacco may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your flowering tobacco indoors.

Last Frost Date

The average date of last frost is February 15 in San Diego. In the coldest months of winter you should expect an average low temperature of 20°F.

Keep in mind that USDA zone info for San Diego may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in San Diego it frosts late in the year after February 15 be ready to protect your flowering tobacco if you have a surprise late frost.

USDA Zone Info for San Diego

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in San Diego

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