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When to Plant Twinspur in Ishpeming, MI

One of the first steps you take when you are determining 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.

By reviewing the USDA zone info for Ishpeming you will be able to figure out when you can plant twinspur.

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Planting Calendar for Twinspur

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

Twinspur are one of those plants that can tolerate a little bit of cold weather which tells us that you can start planting them earlier than plants that are more sensitive to the cold.

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

The earliest that you can plant twinspur in Ishpeming 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 twinspur and expect a good harvest is probably August. You probably don't want to wait any later than that or else your twinspur may not have a chance to really do well. If you are starting your twinspur indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Ishpeming. In the coldest months of winter you should expect an average low temperature of -25°F.

Just be sure to remember that USDA zone info for Ishpeming is not always accurate and the actual date of last frost is different every year. Half of the time in Ishpeming you get a frost after May 15 so just be sure to be ready to cover your twinspur in the event of one of those late frosts.

USDA Zone Info for Ishpeming

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-25°F
Highest Expected Low-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Ishpeming

You may be interested in your other planting guides for Ishpeming.