One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for South Sioux City should be looked at to estimate when to plant garden cress.

Planting Calendar for Garden cress

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

Since garden cress do not do well in cold weather you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant garden cress 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 garden cress and expect a good harvest is probably August. Any later than that and your garden cress may not have a chance to fully mature. Starting your garden cress indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on April 15 in South Sioux City. In the coldest months of winter you should expect an average low temperature of -20°F.

Since the USDA zone info for South Sioux City may not be accurate from year to year the actual date of last frost is different every year. Half of the time in South Sioux City you get surprised by a frost after April 15 so be sure to be ready to cover your garden cress in the event of a 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.