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

In Liberty Lake you can estimate when it's the best time to plant lysimachia by referring to the USDA zone info.

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 do well in moderate cold.

The earliest that you can plant lysimachia in Liberty Lake 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 lysimachia and expect a good harvest is probably September. If you wait any later than that and your lysimachia may not have a chance to really do well. You can get started a few weeks earlier by starting your lysimachia indoors.

Last Frost Date

The average date of last frost is April 15 in Liberty Lake. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Liberty Lake may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Liberty Lake you get surprised by a frost after April 15 so be sure to be ready to protect your lysimachia in the event of a surprise late frost.

USDA Zone Info for Liberty Lake

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Liberty Lake

You may be interested in your other planting guides for Liberty Lake.