One of the first steps you take when you are estimating your gardening schedule is find your 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 Sumner you can determine when it's the best time to plant red cabbage 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.

Since red cabbage are very cold tolerant you can plant them earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant red cabbage in Sumner 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 really do well. Starting your red cabbage indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Sumner. It might get as low as 15°F during the coldest months of winter.

Always keep in mind that USDA zone info for Sumner is an average and the actual date of last frost will vary from year to year. Half of the time in Sumner there is a last frost after March 15 so always be ready to cover your red cabbage in the event of a late frost.

USDA Zone Info for Sumner

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Sumner

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