One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Diamond Bar you can estimate when it's possible to plant pampas grass by looking at the USDA zone info.

Planting Calendar for Pampas Grass

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

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

The earliest that you can plant pampas grass in Diamond Bar is February. However, you really should wait until March 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 few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on January 31 in Diamond Bar. It might get as low as 30°F during the coldest months of winter.

Keep in mind that USDA zone info for Diamond Bar is just an average and the actual date of last frost will vary from year to year. Since half of the time in Diamond Bar last frost occurs after January 31 be ready to protect your pampas grass if you have a surprise late frost.

USDA Zone Info for Diamond Bar

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Diamond Bar

You may be interested in your other planting guides for Diamond Bar.