When to Plant Hosta in Zone 1b

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

You can estimate when to plant hosta in Zone 1b by referring to the USDA zone info.


Planting Calendar for Hosta

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

You can plant hosta a little bit earlier in the year because they do well in moderate cold.

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

The earliest that you can plant hosta 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 hosta and expect a good harvest is probably July. Any later than that and your hosta may not have a chance to fully mature. Starting your hosta indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is June 15 in Zone 1b. In the coldest months of winter you can expect an average low temperature of -55°F.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Zone 1b and it changes from year to year. Half of the time in Zone 1b there is a last frost after June 15 so always be ready to protect your hosta if you have a late frost.

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 your other planting guides for Zone 1b.