One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Paradise Valley you can determine when it's the best time to plant alternaria by checking out the USDA zone info.

Planting Calendar for Alternaria

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

Since alternaria do not do well in cold weather you really should wait until after the last frost has passed before you can plant them.

The earliest that you can plant alternaria in Paradise Valley 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 alternaria and expect a good harvest is probably September. You probably don't want to wait any later than that or else your alternaria may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your alternaria indoors.

Last Frost Date

On average the last frost is on February 15 in Paradise Valley. 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 Paradise Valley may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Paradise Valley you get surprised by a frost after February 15 so make sure that you are prepared to cover your alternaria in the event of a surprise late frost.

USDA Zone Info for Paradise Valley

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 Paradise Valley

You may be interested in your other planting guides for Paradise Valley.