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

You can determine when it's the best time to plant coleus in Viroqua by reviewing the USDA zone info.

Planting Calendar for Coleus

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

Since coleus require warm weather you need to wait until after the last frost before you can plant them.

The earliest that you can plant coleus in Viroqua 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. Any later than that and your coleus may not have a chance to really do well. If you are starting your coleus indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Viroqua the average date of last frost happens on May 15. It might get as low as -25°F during the coldest months of winter.

Since the USDA zone info for Viroqua is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Viroqua you get a frost after May 15 so make sure that you are ready to cover your coleus in the event of one of those late frosts.

USDA Zone Info for Viroqua

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 Viroqua

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