Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of determining when it's possible to plant lysimachia is to refer to the USDA zone info for Dowagiac.

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 means that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant lysimachia in Dowagiac 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 grow to maturity. If you are starting your lysimachia indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Dowagiac. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Dowagiac 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 Dowagiac you get a frost after April 15 so make sure that you are prepared to protect your lysimachia in the event of a surprise late frost.

USDA Zone Info for Dowagiac

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 Dowagiac

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