One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of estimating when you can plant cuphea is to examine the USDA zone info for Marana.

Planting Calendar for Cuphea

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

Since cuphea require warm weather you really should wait until after the last frost has passed before you can plant them.

The earliest that you can plant cuphea in Marana 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 cuphea and expect a good harvest is probably September. Any later than that and your cuphea may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your cuphea indoors.

Last Frost Date

The average date of last frost is February 15 in Marana. It might get as low as 20°F during the coldest months of winter.

Always keep in mind that USDA zone info for Marana is an average and the actual date of last frost is different every year. Since half of the time in Marana you get a frost after February 15 be ready to cover your cuphea in the event of one of those late frosts.

USDA Zone Info for Marana

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Marana

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