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 Superior should be reviewed to determine when it's possible to plant chard.

Planting Calendar for Chard

Frost tolerance for chard:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Chard tend to make it in moderate cold which means that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant chard in Superior is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant chard and expect a good harvest is probably August. Any later than that and your chard may not have a chance to really do well. You can get started a few weeks earlier by starting your chard indoors.

Last Frost Date

The average date of last frost is May 15 in Superior. In the coldest months of winter you should expect an average low temperature of -25°F.

It's important to remember that USDA zone info for Superior is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Superior you get surprised by a frost after May 15 be ready to cover your chard if you have one of those late frosts.

USDA Zone Info for Superior

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 Superior

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