One of the best tools that you have as gardeners to help us determine 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 to plant iceland poppy by looking at the USDA zone info.

Planting Calendar for Iceland Poppy

Frost tolerance for iceland poppy:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since iceland poppy do well in moderate cold you can plant them a little bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant iceland poppy in Diamond Bar is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant iceland poppy and expect a good harvest is probably October. Any later than that and your iceland poppy may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your iceland poppy indoors.

Last Frost Date

On average the last frost is on January 31 in Diamond Bar. You should expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Diamond Bar may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Diamond Bar last frost occurs after January 31 so make sure that you are ready to protect your iceland poppy 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.