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

It's possible to determine when it's possible to plant coleus by checking out the USDA zone info for Northfield.

Planting Calendar for Coleus

Frost tolerance for coleus:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You can not plant coleus until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant coleus in Northfield is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant coleus and expect a good harvest is probably August. If you wait any later than that and your coleus may not have a chance to really do well. You can get started a few weeks earlier by starting your coleus indoors.

Last Frost Date

The average date of last frost is May 15 in Northfield. It might get as low as -25°F during the coldest months of winter.

Always keep in mind 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 there is a last frost after May 15 be ready to protect your coleus if you have one of those late frosts.

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.