The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By reviewing the USDA zone info for Rohnert Park you should be able to figure out when 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 not a good idea to plant pampas grass until after the last frost because they do not do well in cold weather.

The earliest that you can plant pampas grass in Rohnert Park 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 really do well. Starting your pampas grass indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Rohnert Park. In the coldest months of winter you should expect an average low temperature of 25°F.

It's important to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Rohnert Park and it changes from year to year. Since half of the time in Rohnert Park there is a last frost after February 15 be ready to cover your pampas grass in the event of one of those late frosts.

USDA Zone Info for Rohnert Park

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 Rohnert Park

You may be interested in your other planting guides for Rohnert Park.