The USDA Zone info is a great tool for gardeners to help us estimate 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 figure out when it's the best time to plant nicotiana in San Luis Obispo by referring to the USDA zone info.

Planting Calendar for Nicotiana

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

Since nicotiana do not do well in cold weather it is important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant nicotiana in San Luis Obispo 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 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 fully mature. Starting your nicotiana indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in San Luis Obispo. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for San Luis Obispo may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in San Luis Obispo there is a last frost after February 15 be ready to cover your nicotiana in the event of one of those late frosts.

USDA Zone Info for San Luis Obispo

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 Luis Obispo

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