One of the best tools that you have as gardeners to help us determine 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.

In Superior you can figure out when it's possible to plant peas by using the USDA zone info.

Planting Calendar for Peas

Frost tolerance for peas:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant peas a lot earlier in the year because they do well in cold.

The earliest that you can plant peas 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 peas and expect a good harvest is probably August. You probably don't want to wait any later than that or else your peas may not have a chance to grow to maturity. If you are starting your peas indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Superior. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Superior is just an average the actual date of last frost will vary from year to year. Since half of the time in Superior you get surprised by a frost after May 15 be ready to protect your peas in the event of a surprise late frost.

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.