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.

The USDA zone info for Tempe can be looked at to figure out when it's the best time to plant pampas grass.

Planting Calendar for Pampas Grass

Frost tolerance for pampas grass:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since pampas grass are not cold tolerant it's important to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant pampas grass in Tempe 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 pampas grass and expect a good harvest is probably September. If you wait any later than that and your pampas grass may not have a chance to grow to maturity. Starting your pampas grass indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Since the USDA zone info for Tempe may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Tempe there is a last frost after February 15 be ready to protect your pampas grass in the event of a surprise late frost.

USDA Zone Info for Tempe

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 Tempe

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