One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to determine when it's a good idea to plant red cabbage by using the USDA zone info for Alamosa.

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 do well in cold which tells us that you can get them planted much earlier than other frost tender plants.

The earliest that you can plant red cabbage in Alamosa is March. However, you really should wait until April 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 August. Any later than that and 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 few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Alamosa. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Alamosa is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Alamosa you get a frost after May 15 so always be ready to cover your red cabbage in the event of a late frost.

USDA Zone Info for Alamosa

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Alamosa

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