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

You can estimate when it's possible to plant savoy cabbage in Superior by using the USDA zone info.

Planting Calendar for Savoy cabbage

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

Since savoy cabbage do well in cold you can plant them quite a bit earlier in the year than other frost tender plants.

The earliest that you can plant savoy cabbage 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 savoy cabbage and expect a good harvest is probably August. Any later than that and your savoy cabbage may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your savoy cabbage indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Superior. In the coldest months of winter you should expect an average low temperature of -25°F.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Superior and it is different every year. Half of the time in Superior you get a frost after May 15 so be sure to be ready to protect your savoy cabbage 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.