Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant dallas fern in Iron Mountain should be determined by referring to the USDA zone info.

Planting Calendar for Dallas Fern

Frost tolerance for dallas fern:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since dallas fern are not cold tolerant you have to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant dallas fern 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 dallas fern and expect a good harvest is probably August. Any later than that and your dallas fern may not have a chance to really do well. Starting your dallas fern indoors is a great way to get them started a couple of weeks 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.

Always keep in mind that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Iron Mountain and it will vary from year to year. Half of the time in Iron Mountain there is a last frost after May 15 so make sure that you are ready to cover your dallas fern in the event of 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.