When can I plant Lettuce in Zone 3b

The USDA Zone info is a great tool for gardeners to help us estimate 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.

The earliest that you can plant lettuce in Zone 3b can be determined by checking out the USDA zone info.


Planting Calendar for Lettuce

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

Since lettuce are one of those plants that can tolerate a little bit of cold weather you can plant them a little bit earlier in the year than more sensitive plants.

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

The earliest that you can plant lettuce in Zone 3b 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 lettuce and expect a good harvest is probably August. Any later than that and your lettuce may not have a chance to grow to maturity. Starting your lettuce indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Zone 3b. In the coldest months of winter we can expect an average low temperature of -35°F.

Always keep in mind that our actual date of last frost is not always accurate because it is based on the USDA zone info for Zone 3b and it changes from year to year. Half of the time in Zone 3b last frost occurs after May 15 so always be ready to protect your lettuce in the event of one of those late frosts.

USDA Zone Info for Zone 3b

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-35°F
Highest Expected Low-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Zone 3b

You may be interested in our other planting guides for Zone 3b.