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.

The USDA zone info for Fountain Hills can be looked at to determine when it's possible to plant calla lily.

Planting Calendar for Calla Lily

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

Since calla lily require warm weather it's necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant calla lily in Fountain Hills 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 calla lily and expect a good harvest is probably September. You probably don't want to wait any later than that or else your calla lily may not have a chance to really do well. You can get started a few weeks earlier by starting your calla lily indoors.

Last Frost Date

In Fountain Hills the average date of last frost happens on February 15. You can expect an average low temperature of 25°F in the coldest months of winter.

Keep in mind that USDA zone info for Fountain Hills is an average and the actual date of last frost will vary from year to year. Since half of the time in Fountain Hills there is a last frost after February 15 be ready to protect your calla lily if you have a surprise late frost.

USDA Zone Info for Fountain Hills

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 Fountain Hills

You may be interested in your other planting guides for Fountain Hills.