The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By using the USDA zone info for Diamond Bar you should be able to determine when to plant lysimachia.

Planting Calendar for Lysimachia

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

You can plant lysimachia just a bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant lysimachia 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 lysimachia and expect a good harvest is probably October. If you wait any later than that and your lysimachia may not have a chance to fully mature. Starting your lysimachia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Diamond Bar and it is different every year. Since half of the time in Diamond Bar you get a frost after January 31 be ready to protect your lysimachia in the event of one of those late frosts.

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.