Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Hudson you can estimate when it's a good idea to plant lysimachia by looking at 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.

Lysimachia do well in moderate cold which tells us that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant lysimachia in Hudson is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant lysimachia and expect a good harvest is probably August. If you wait any later than that and your lysimachia may not have a chance to really do well. You can get started a little bit earlier by starting your lysimachia indoors.

Last Frost Date

The average date of last frost is May 15 in Hudson. You can expect an average low temperature of -25°F in the coldest months of winter.

Always keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Hudson and it can change quite a bit from year to year. Half of the time in Hudson it frosts late in the year after May 15 so always be ready to protect your lysimachia if you have a late frost.

USDA Zone Info for Hudson

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Hudson

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