When can I plant Iceberg lettuce in Zone 3a

One of the best tools that we have as gardeners to help us estimate our gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

A way of making a decision about when it's a good idea to plant iceberg lettuce is to consult the USDA zone info for Zone 3a.


Planting Calendar for Iceberg lettuce

Frost tolerance for iceberg lettuce: Tolerant of a very small amount of frost.
When you should plant them: Up to 3 weeks before last frost.

Iceberg lettuce are barely cold tolerant which tells us that you can plant them slightly earlier than other plants that might not handle the cold.

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

The earliest that you can plant iceberg lettuce in Zone 3a is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant iceberg lettuce and expect a good harvest is probably August. If you wait any later than that and your iceberg lettuce may not have a chance to really do well. If you are starting your iceberg lettuce indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Zone 3a the average date of last frost happens on May 15. We can expect an average low temperature of -40°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Zone 3a may not be accurate from year to year and our actual date of last frost can change quite a bit from year to year. Half of the time in Zone 3a we get surprised by a frost after May 15 so make sure that you are ready to cover your iceberg lettuce in the event of one of those late frosts.

USDA Zone Info for Zone 3a

Here is the info for USDA Zone 3a.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-40°F
Highest Expected Low-35°F

This means that on a really cold year, the coldest it will get is -40°F. On most years you should be prepared to experience lows near -35°F.

Plants to Grow in Zone 3a

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