Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By checking out the USDA zone info for Walnut Creek you should be able to figure out when it's possible to plant pampas grass.

Planting Calendar for Pampas Grass

Frost tolerance for pampas grass:	Not tolerant of frost.
When to plant:	After the last frost.

It's probably a bad idea to plant pampas grass until after the last frost has passed because they do not do well in cold weather.

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

Last Frost Date

On average the last frost has passed is on February 15 in Walnut Creek. It might get as low as 25°F during the coldest months of winter.

It's important to remember that USDA zone info for Walnut Creek is an average and the actual date of last frost changes from year to year. Since half of the time in Walnut Creek last frost occurs after February 15 be ready to cover your pampas grass in the event of a surprise late frost.

USDA Zone Info for Walnut 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 Walnut Creek

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