The USDA Zone info is a great tool for gardeners to help us figure out 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.

In Iron Mountain you can estimate when to plant garden orache by using the USDA zone info.

Planting Calendar for Garden Orache

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

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

The earliest that you can plant garden orache 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 garden orache and expect a good harvest is probably August. If you wait any later than that and your garden orache may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your garden orache indoors.

Last Frost Date

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

Remember that USDA zone info for Iron Mountain is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Iron Mountain you get surprised by a frost after May 15 be ready to cover your garden orache in the event of 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.