When to Plant Trifolium in Zone 2b

One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Zone 2b you can estimate when it's a good idea to plant trifolium by checking out the USDA zone info.

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Planting Calendar for Trifolium

Frost tolerance for trifolium: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

Trifolium can survive in mild cold which tells us that you can plant them slightly earlier in the year than other frost tender plants.

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

The earliest that you can plant trifolium in Zone 2b 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 trifolium and expect a good harvest is probably August. Any later than that and your trifolium may not have a chance to really do well. Starting your trifolium indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Zone 2b. In the coldest months of winter you should expect an average low temperature of -45°F.

Remember that USDA zone info for Zone 2b is just an average and the actual date of last frost changes from year to year. Since half of the time in Zone 2b it frosts late in the year after May 15 be ready to cover your trifolium if you have a late frost.

USDA Zone Info for Zone 2b

Here is the info for USDA Zone 2b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)August 15
Lowest Expected Low-45°F
Highest Expected Low-40°F

This means that on a really cold year, the coldest it will get is -45°F. On most years you should be prepared to experience lows near -40°F.

Plants to Grow in Zone 2b

You may be interested in your other planting guides for Zone 2b.