The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. 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 to plant red cabbage in Granite City by looking at the USDA zone info.

Planting Calendar for Red cabbage

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

Red cabbage tend to make it in pretty solid cold which means that you can plant them much earlier in the year than more sensitive plants.

The earliest that you can plant red cabbage in Granite City is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant red cabbage and expect a good harvest is probably September. You probably don't want to wait any later than that or else your red cabbage may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your red cabbage indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Granite City. In the coldest months of winter you can expect an average low temperature of -5°F.

Always keep in mind that USDA zone info for Granite City is just an average and the actual date of last frost will vary from year to year. Half of the time in Granite City there is a last frost after April 15 so make sure that you are ready to cover your red cabbage if you have one of those late frosts.

USDA Zone Info for Granite City

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Granite City

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