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

A way of figuring out when it's the best time to plant stocks is to look at the USDA zone info for Spearfish.

Planting Calendar for Stocks

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

Stocks tend to make it in a tiny bit of cold which means that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant stocks 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 stocks and expect a good harvest is probably August. Any later than that and your stocks may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your stocks indoors.

Last Frost Date

The average date of last frost is April 15 in Spearfish. In the coldest months of winter you can expect an average low temperature of -20°F.

Since the USDA zone info for Spearfish 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 Spearfish it frosts late in the year after April 15 be ready to cover your stocks in the event of one of those late frosts.

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.