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

A way of figuring out when to plant lysimachia is to refer to the USDA zone info for Washougal.

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 a little earlier in the year because they do well in moderate cold.

The earliest that you can plant lysimachia in Washougal 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. You probably don't want to wait any later than that or else your lysimachia may not have a chance to fully mature. You can get started a few weeks earlier by starting your lysimachia indoors.

Last Frost Date

The average date of last frost is March 15 in Washougal. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Washougal may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Washougal last frost occurs after March 15 be ready to cover your lysimachia if you have a late frost.

USDA Zone Info for Washougal

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Washougal

You may be interested in your other planting guides for Washougal.