One of the first steps you take when you are getting a good idea 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.

In Lake Mills you can determine when to plant asparagus fern by looking at the USDA zone info.

Planting Calendar for Asparagus Fern

Frost tolerance for asparagus fern:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since asparagus fern are not cold tolerant you must wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant asparagus fern in Lake Mills is April. However, you really should wait until May 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. Any later than that and your asparagus fern may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your asparagus fern indoors.

Last Frost Date

The average date of last frost is April 15 in Lake Mills. You can expect an average low temperature of -20°F in the coldest months of winter.

Since the USDA zone info for Lake Mills is an average the actual date of last frost is different every year. Half of the time in Lake Mills you get surprised by a frost after April 15 so be sure to be ready to cover your asparagus fern if you have a late frost.

USDA Zone Info for Lake Mills

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Lake Mills

You may be interested in your other planting guides for Lake Mills.