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

The USDA zone info for Colby should be looked at to estimate when you can plant cabbage.

Planting Calendar for Cabbage

Frost tolerance for cabbage:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant cabbage a little bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant cabbage in Colby 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 cabbage and expect a good harvest is probably September. You probably don't want to wait any later than that or else your cabbage may not have a chance to grow to maturity. If you are starting your cabbage indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

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

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Colby and it can change quite a bit from year to year. Half of the time in Colby there is a last frost after April 15 so make sure that you are prepared to cover your cabbage if you have one of those late frosts.

USDA Zone Info for Colby

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 Colby

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