One of the first steps you take when you are figuring out your gardening schedule is find your 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.

A common way of making a decision about when it's the best time to plant lysimachia is to use the USDA zone info for Lake Forest.

Planting Calendar for Lysimachia

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

Lysimachia do well in moderate cold which tells us that you can plant them a little bit earlier than other plants that might not handle the cold.

The earliest that you can plant lysimachia in Lake Forest 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. Any later than that and your lysimachia may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your lysimachia indoors.

Last Frost Date

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

Remember that USDA zone info for Lake Forest may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Lake Forest you get a frost after April 15 be ready to cover your lysimachia in the event of a surprise late frost.

USDA Zone Info for Lake Forest

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°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 -10°F.

Plants to Grow in Lake Forest

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