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

You can figure out when it's the best time to plant strawflowers in Diamond Bar by using the USDA zone info.

Planting Calendar for Strawflowers

Frost tolerance for strawflowers:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Strawflowers are barely cold tolerant which means that you can plant them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant strawflowers 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 strawflowers and expect a good harvest is probably September. You probably don't want to wait any later than that or else your strawflowers may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your strawflowers indoors.

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 not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Diamond Bar it frosts late in the year after January 31 so make sure that you are prepared to protect your strawflowers 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.