Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant indian cress in Billings can be figured out by using the USDA zone info.

Planting Calendar for Indian cress

Frost tolerance for indian cress:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's probably not a good idea to plant indian cress until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant indian cress in Billings is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant indian cress and expect a good harvest is probably August. Any later than that and your indian cress may not have a chance to really do well. You can get started a little bit earlier by starting your indian cress indoors.

Last Frost Date

On average the last frost is on May 15 in Billings. In the coldest months of winter you should expect an average low temperature of -25°F.

It's important to remember that the actual date of last frost is an average because it is based on the USDA zone info for Billings and it will vary from year to year. Half of the time in Billings you get a frost after May 15 so always be ready to protect your indian cress if you have a late frost.

USDA Zone Info for Billings

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 Billings

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