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

The best time to plant coleus in Deerfield should be estimated by using the USDA zone info.

Planting Calendar for Coleus

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

It's probably a bad idea to plant coleus until after the last frost because they require warm weather.

The earliest that you can plant coleus in Deerfield is April. However, you really should wait until May 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 grow to maturity. 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

On average all chance of frost has passed is on April 15 in Deerfield. In the coldest months of winter you should expect an average low temperature of -15°F.

It's important to remember that USDA zone info for Deerfield is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Deerfield you get a frost after April 15 so make sure that you are prepared to cover your coleus in the event of a surprise late frost.

USDA Zone Info for Deerfield

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Deerfield

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