The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of estimating when it's possible to plant chicory is to refer to the USDA zone info for Iron Mountain.

Planting Calendar for Chicory

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

Since chicory are moderately cold tolerant you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant chicory 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 chicory and expect a good harvest is probably August. Any later than that and your chicory may not have a chance to fully mature. If you are starting your chicory indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Iron Mountain. In the coldest months of winter you can expect an average low temperature of -30°F.

Since the USDA zone info for Iron Mountain may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Iron Mountain it frosts late in the year after May 15 so be sure to be ready to protect your chicory in the event of a late frost.

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.