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

The USDA zone info for Diamond Bar can be reffered to in order to determine when you can plant pentas.

Planting Calendar for Pentas

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

Since pentas require warm weather you have to wait until after the last frost has passed before you can plant them.

The earliest that you can plant pentas 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 pentas and expect a good harvest is probably September. Any later than that and your pentas may not have a chance to fully mature. You can get started a little bit earlier by starting your pentas indoors.

Last Frost Date

On average all chance of frost has passed is on January 31 in Diamond Bar. You can expect an average low temperature of 30°F in the coldest months of winter.

Always keep in mind that USDA zone info for Diamond Bar may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Diamond Bar it frosts late in the year after January 31 be ready to protect your pentas in the event of 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.