When can I plant Carrots in Zone 3a

One of the first steps we take when we are determining our gardening schedule is find our 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.

The best time to plant carrots in Zone 3a should be determined by referring to the USDA zone info.


Planting Calendar for Carrots

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

Carrots do well in mild cold which means that you can plant them a bit earlier in the year than other plants that might not handle the cold.

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

The earliest that you can plant carrots in Zone 3a 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 carrots and expect a good harvest is probably August. If you wait any later than that and your carrots may not have a chance to really do well. If you are starting your carrots indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

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

Remember that USDA zone info for Zone 3a is not always accurate and our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 3a it frosts late in the year after May 15 be ready to protect your carrots if we have a surprise late frost.

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.