One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can estimate when it's a good idea to plant sweet woodruff in Richland Center by referring to 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 do well in moderate cold which means that you can plant them earlier than more sensitive plants.

The earliest that you can plant sweet woodruff in Richland Center 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 sweet woodruff and expect a good harvest is probably August. Any later than that and your sweet woodruff may not have a chance to fully mature. If you are starting your sweet woodruff indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Richland Center. In the coldest months of winter you should expect an average low temperature of -25°F.

Since the USDA zone info for Richland Center may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Richland Center there is a last frost after May 15 be ready to protect your sweet woodruff if you have a surprise late frost.

USDA Zone Info for Richland Center

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 Richland Center

You may be interested in your other planting guides for Richland Center.