When to Plant Coleus in Prospect Heights, IL

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.

The USDA zone info for Prospect Heights can be used to figure out when you can plant coleus.


Planting Calendar for Coleus

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

It's probably a bad idea to plant coleus until after the last frost has passed because they do not do well in cold weather.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant coleus
Possibly ok, but a risky time to plant coleus
Probably not a good time to plant coleus

The earliest that you can plant coleus in Prospect Heights 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 really do well. You can get started a few weeks earlier by starting your coleus indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Prospect Heights. You should expect an average low temperature of -15°F in the coldest months of winter.

Remember that USDA zone info for Prospect Heights may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Prospect Heights it frosts late in the year after April 15 so just be sure to be ready to protect your coleus if you have a late frost.

USDA Zone Info for Prospect Heights

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 Prospect Heights

You may be interested in your other planting guides for Prospect Heights.