Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Pasadena you can figure out when it's possible to plant basil by reviewing the USDA zone info.

Planting Calendar for Basil

Frost tolerance for basil:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You really shouldn't plant basil until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant basil in Pasadena 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 basil and expect a good harvest is probably September. Any later than that and your basil may not have a chance to fully mature. Starting your basil indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on January 31 in Pasadena. You should expect an average low temperature of 30°F in the coldest months of winter.

Remember that USDA zone info for Pasadena is just an average and the actual date of last frost will vary from year to year. Since half of the time in Pasadena you get a frost after January 31 be ready to cover your basil if you have a late frost.

USDA Zone Info for Pasadena

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Pasadena

You may be interested in your other planting guides for Pasadena.