frostdate name logo in white
frostdate name logo in white

When to Plant Lettuce in Columbia Falls, MT

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

By referring to the USDA zone info for Columbia Falls you should be able to estimate when it's a good idea to plant lettuce.


Planting Calendar for Lettuce

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

Lettuce are one of those plants that can tolerate a little bit of cold weather which means that you can plant them a little bit earlier than other plants that might not handle the cold.

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 Columbia Falls is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant lettuce and expect a good harvest is probably September. You probably don't want to wait any later than that or else your lettuce may not have a chance to grow to maturity. If you are starting your lettuce indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Columbia Falls. You can expect an average low temperature of -20°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Columbia Falls is not always accurate and the actual date of last frost is different every year. Half of the time in Columbia Falls it frosts late in the year after April 15 so make sure that you are ready to cover your lettuce in the event of a late frost.

USDA Zone Info for Columbia Falls

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-20°F
Highest Expected Low-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Columbia Falls

You may be interested in your other planting guides for Columbia Falls.