Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of figuring out when to plant asparagus fern is to check out the USDA zone info for Kasson.

Planting Calendar for Asparagus Fern

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

It's not a good idea to plant asparagus fern until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant asparagus fern in Kasson 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. If you wait any later than that and your asparagus fern may not have a chance to really do well. If you are starting your asparagus fern indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Kasson the average date of last frost happens on May 15. It might get as low as -25°F during the coldest months of winter.

Since the USDA zone info for Kasson is just an average the actual date of last frost is different every year. Half of the time in Kasson you get a frost after May 15 so make sure that you are prepared to cover your asparagus fern if you have a surprise late frost.

USDA Zone Info for Kasson

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Kasson

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