When can I plant Lysimachia in Zone 1b

The USDA Zone info is a great tool for gardeners to help us figure out our gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

By using the USDA zone info for Zone 1b you should be able to determine when it's a good idea to plant lysimachia.


Planting Calendar for Lysimachia

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

Lysimachia do well in moderate cold which tells us that you can start planting them earlier than other plants that might not handle the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant lysimachia
Possibly ok, but a risky time to plant lysimachia
Probably not a good time to plant lysimachia

The earliest that you can plant lysimachia in Zone 1b is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant lysimachia and expect a good harvest is probably July. Any later than that and your lysimachia may not have a chance to really do well. 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 has passed is on June 15 in Zone 1b. It might get as low as -55°F during the coldest months of winter.

Since the USDA zone info for Zone 1b is not always accurate our actual date of last frost changes from year to year. Half of the time in Zone 1b we get a frost after June 15 so always be ready to protect your lysimachia in the event of one of those late frosts.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.