One of the first steps you take when you are determining 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.

The USDA zone info for Humboldt can be used to determine when you can 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 much earlier in the year because they are very cold tolerant.

The earliest that you can plant red cabbage in Humboldt 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 really do well. If you are starting your red cabbage indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Humboldt the average date of last frost happens on April 15. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Humboldt is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Humboldt there is a last frost after April 15 be ready to protect your red cabbage in the event of one of those late frosts.

USDA Zone Info for Humboldt

Here is the info for USDA Zone 7a.

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

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

Plants to Grow in Humboldt

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