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

The USDA zone info for South Sioux City can be used to determine when it's the best time to plant asparagus fern.

Planting Calendar for Asparagus Fern

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

Asparagus Fern require warm weather which tells us that it's important to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant asparagus fern in South Sioux City 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. If you wait any later than that and your asparagus fern may not have a chance to really do well. Starting your asparagus 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 April 15 in South Sioux City. In the coldest months of winter you can expect an average low temperature of -20°F.

Just be sure to remember that USDA zone info for South Sioux City is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in South Sioux City it frosts late in the year after April 15 be ready to protect your asparagus fern if you have a surprise late frost.

USDA Zone Info for South Sioux City

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 South Sioux City

You may be interested in your other planting guides for South Sioux City.