One of the best tools that you have as gardeners to help us determine 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 figure out when it's a good idea to plant parsnip in Mankato by looking at the USDA zone info.

Planting Calendar for Parsnip

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

Since parsnip do well in moderate cold you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant parsnip in Mankato 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 parsnip and expect a good harvest is probably August. If you wait any later than that and your parsnip may not have a chance to fully mature. You can get started a little bit earlier by starting your parsnip indoors.

Last Frost Date

The average date of last frost is May 15 in Mankato. In the coldest months of winter you should expect an average low temperature of -25°F.

Since the USDA zone info for Mankato is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Mankato there is a last frost after May 15 be ready to protect your parsnip in the event of a surprise late frost.

USDA Zone Info for Mankato

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 Mankato

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