One of the best tools that you have as gardeners to help us determine 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.

A common way of estimating when to plant pentas is to check out the USDA zone info for San Jacinto.

Planting Calendar for Pentas

Frost tolerance for pentas:	Not tolerant of frost.
When to plant:	After the last frost.

Pentas require warm weather which means that you have to 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 pentas in San Jacinto 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 pentas and expect a good harvest is probably September. You probably don't want to wait any later than that or else your pentas may not have a chance to fully mature. You can get started a little bit earlier by starting your pentas indoors.

Last Frost Date

The average date of last frost is February 15 in San Jacinto. In the coldest months of winter you should expect an average low temperature of 25°F.

It's important to remember that USDA zone info for San Jacinto is an average and the actual date of last frost changes from year to year. Half of the time in San Jacinto you get surprised by a frost after February 15 so make sure that you are prepared to protect your pentas in the event of one of those late frosts.

USDA Zone Info for San Jacinto

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 Jacinto

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