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.

One way of determining when it's a good idea to plant zinnia is to examine the USDA zone info for Cave Creek.

Planting Calendar for Zinnia

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

Since zinnia are not cold tolerant you really should wait until after all chance of frost has passed before you can plant them.

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

Last Frost Date

On average all chance of frost has passed is on February 15 in Cave Creek. In the coldest months of winter you can expect an average low temperature of 25°F.

Since the USDA zone info for Cave Creek is not always accurate the actual date of last frost will vary from year to year. Half of the time in Cave Creek you get surprised by a frost after February 15 so make sure that you are ready to protect your zinnia in the event of a late frost.

USDA Zone Info for Cave Creek

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 Cave Creek

You may be interested in your other planting guides for Cave Creek.