One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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 best time to plant cabbage in Great Falls can be estimated by checking out the USDA zone info.

Planting Calendar for Cabbage

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

Since cabbage do well in moderate cold you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant cabbage in Great Falls 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 cabbage and expect a good harvest is probably August. Any later than that and your cabbage may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your cabbage indoors.

Last Frost Date

On average all chance of frost has passed is on May 15 in Great Falls. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Great Falls is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Great Falls you get surprised by a frost after May 15 so make sure that you are prepared to cover your cabbage in the event of one of those late frosts.

USDA Zone Info for Great Falls

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Great Falls

You may be interested in your other planting guides for Great Falls.