Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to determine when it's a good idea to plant fountain grass by reviewing the USDA zone info for Spearfish.

Planting Calendar for Fountain Grass

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

Fountain Grass do well in mild cold which means that you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant fountain grass in Spearfish 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 fountain grass and expect a good harvest is probably August. You probably don't want to wait any later than that or else your fountain grass may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your fountain grass indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Spearfish. You should expect an average low temperature of -20°F in the coldest months of winter.

Remember that USDA zone info for Spearfish is not always accurate and the actual date of last frost changes from year to year. Half of the time in Spearfish you get a frost after April 15 so be sure to be ready to cover your fountain grass if you have a surprise late frost.

USDA Zone Info for Spearfish

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Spearfish

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