Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Chanhassen you can figure out when it's possible to plant coreopsis by referring to the USDA zone info.

Planting Calendar for Coreopsis

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

Coreopsis do well in moderate cold which tells us that you can get them planted earlier than other frost tender plants.

The earliest that you can plant coreopsis in Chanhassen 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 coreopsis and expect a good harvest is probably August. Any later than that and your coreopsis may not have a chance to really do well. You can get started a couple of weeks earlier by starting your coreopsis indoors.

Last Frost Date

In Chanhassen 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 Chanhassen is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Chanhassen there is a last frost after May 15 so make sure that you are ready to protect your coreopsis if you have one of those late frosts.

USDA Zone Info for Chanhassen

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 Chanhassen

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