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

One way of getting a good idea when you can plant ruby grass is to consult the USDA zone info for Bismarck.

Planting Calendar for Ruby Grass

Frost tolerance for ruby grass:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Ruby Grass are barely cold tolerant which tells us that you can plant them slightly earlier than other frost tender plants.

The earliest that you can plant ruby grass in Bismarck is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant ruby grass and expect a good harvest is probably August. You probably don't want to wait any later than that or else your ruby grass may not have a chance to grow to maturity. If you are starting your ruby grass 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 May 15 in Bismarck. You should expect an average low temperature of -30°F in the coldest months of winter.

Always keep in mind that USDA zone info for Bismarck is an average and the actual date of last frost changes from year to year. Half of the time in Bismarck there is a last frost after May 15 so make sure that you are prepared to protect your ruby grass if you have a surprise late frost.

USDA Zone Info for Bismarck

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 Bismarck

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