One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of making a decision about when it's a good idea to plant asparagus fern is to examine the USDA zone info for Ironwood.

Planting Calendar for Asparagus Fern

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

It's not a good idea to plant asparagus fern until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant asparagus fern in Ironwood 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 asparagus fern and expect a good harvest is probably August. You probably don't want to wait any later than that or else your asparagus fern may not have a chance to grow to maturity. You can get started a little bit earlier by starting your asparagus fern indoors.

Last Frost Date

On average all chance of frost has passed is on May 15 in Ironwood. It might get as low as -30°F during the coldest months of winter.

It's important to remember that USDA zone info for Ironwood may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Ironwood it frosts late in the year after May 15 be ready to cover your asparagus fern if you have a late frost.

USDA Zone Info for Ironwood

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 Ironwood

You may be interested in your other planting guides for Ironwood.