One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By referring to the USDA zone info for Warrenville it's possible to figure out when to plant red cabbage.

Planting Calendar for Red cabbage

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

You can plant red cabbage earlier in the year because they are very cold tolerant.

The earliest that you can plant red cabbage in Warrenville 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. If you wait any later than that and your red cabbage may not have a chance to grow to maturity. You can get started a little bit earlier by starting your red cabbage indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Warrenville. In the coldest months of winter you can expect an average low temperature of -15°F.

Remember that USDA zone info for Warrenville is an average and the actual date of last frost will vary from year to year. Half of the time in Warrenville 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 Warrenville

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Warrenville

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