Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can figure out when it's a good idea to plant basil in Mesa by using the USDA zone info.

Planting Calendar for Basil

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

It's not a good idea to plant basil until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant basil in Mesa 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 basil and expect a good harvest is probably September. You probably don't want to wait any later than that or else your basil may not have a chance to really do well. Starting your basil indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in Mesa. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Mesa is just an average the actual date of last frost is different every year. Half of the time in Mesa last frost occurs after February 15 so just be sure to be ready to protect your basil in the event of one of those late frosts.

USDA Zone Info for Mesa

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 Mesa

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