The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. 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 arabis in Miles City should be determined by referring to the USDA zone info.

Planting Calendar for Arabis

Frost tolerance for arabis:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Arabis do ok in cold weather which means that you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant arabis in Miles City 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 arabis and expect a good harvest is probably August. You probably don't want to wait any later than that or else your arabis may not have a chance to really do well. If you are starting your arabis indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Miles City the average date of last frost happens on May 15. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Miles City may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Miles City it frosts late in the year after May 15 be ready to cover your arabis in the event of a surprise late frost.

USDA Zone Info for Miles City

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 Miles City

You may be interested in your other planting guides for Miles City.