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 sweet woodruff in Spirit Lake can be figured out by using the USDA zone info.

Planting Calendar for Sweet Woodruff

Frost tolerance for sweet woodruff:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Sweet Woodruff are one of those plants that can tolerate a little bit of cold weather which tells us that you can plant them a little bit earlier than plants that are more sensitive to the cold.

The earliest that you can plant sweet woodruff in Spirit Lake is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant sweet woodruff and expect a good harvest is probably September. Any later than that and your sweet woodruff may not have a chance to grow to maturity. You can get started a little bit earlier by starting your sweet woodruff indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for Spirit Lake may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Spirit Lake you get surprised by a frost after April 15 so make sure that you are ready to cover your sweet woodruff in the event of a late frost.

USDA Zone Info for Spirit Lake

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 Spirit Lake

You may be interested in your other planting guides for Spirit Lake.