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.

You should be able to estimate when it's the best time to plant eggplants by referring to the USDA zone info for Iron Mountain.

Planting Calendar for Eggplants

Frost tolerance for eggplants:	Not tolerant of frost.
When to plant:	After the last frost.

Since eggplants do not do well in cold weather it's necessary to wait until after the last frost when the weather gets warmer before you can plant them.

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

Last Frost Date

On average all chance of frost has passed is on May 15 in Iron Mountain. In the coldest months of winter you can expect an average low temperature of -30°F.

Always keep in mind that USDA zone info for Iron Mountain is not always accurate and the actual date of last frost is different every year. Since half of the time in Iron Mountain it frosts late in the year after May 15 be ready to cover your eggplants if you have a surprise 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.