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

The first chance to plant parsley in River Falls can be estimated by referring to the USDA zone info.

Planting Calendar for Parsley

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

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

The earliest that you can plant parsley in River Falls 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 parsley and expect a good harvest is probably August. You probably don't want to wait any later than that or else your parsley may not have a chance to grow to maturity. If you are starting your parsley indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In River Falls the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for River Falls is just an average the actual date of last frost will vary from year to year. Since half of the time in River Falls it frosts late in the year after May 15 be ready to protect your parsley in the event of one of those late frosts.

USDA Zone Info for River Falls

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 River Falls

You may be interested in your other planting guides for River Falls.