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

By reviewing the USDA zone info for Northfield it's possible to determine when to plant garden mums.

Planting Calendar for Garden Mums

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

Garden Mums can survive in mild cold which tells us that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant garden mums in Northfield 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 garden mums and expect a good harvest is probably August. You probably don't want to wait any later than that or else your garden mums may not have a chance to fully mature. You can get started a little bit earlier by starting your garden mums indoors.

Last Frost Date

On average the last frost has passed is on May 15 in Northfield. You can expect an average low temperature of -25°F in the coldest months of winter.

It's important to remember that USDA zone info for Northfield may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Northfield last frost occurs after May 15 be ready to protect your garden mums if you have a late frost.

USDA Zone Info for Northfield

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 Northfield

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