One of the best tools that you have as gardeners to help us determine your 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 your area.

You should be able to determine when it's possible to plant forget-me-not by reviewing the USDA zone info for Iron Mountain.

Planting Calendar for Forget-Me-Not

Frost tolerance for forget-me-not:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant forget-me-not just a bit earlier in the year because they do well in moderate cold.

The earliest that you can plant forget-me-not in Iron Mountain 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 forget-me-not and expect a good harvest is probably August. Any later than that and your forget-me-not may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your forget-me-not indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Iron Mountain. You can expect an average low temperature of -30°F in the coldest months of winter.

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Iron Mountain and it is different every year. Half of the time in Iron Mountain last frost occurs after May 15 so be sure to be ready to protect your forget-me-not if you have one of those late frosts.

USDA Zone Info for Iron Mountain

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Iron Mountain

You may be interested in your other planting guides for Iron Mountain.