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.

A way of determining when to plant tropical hibiscus is to use the USDA zone info for Calipatria.

Planting Calendar for Tropical Hibiscus

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

It's a bad idea to plant tropical hibiscus until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant tropical hibiscus in Calipatria 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 tropical hibiscus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your tropical hibiscus may not have a chance to really do well. You can get started a little bit earlier by starting your tropical hibiscus indoors.

Last Frost Date

The average date of last frost is February 15 in Calipatria. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Calipatria is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Calipatria you get a frost after February 15 so be sure to be ready to protect your tropical hibiscus in the event of a surprise late frost.

USDA Zone Info for Calipatria

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 Calipatria

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