When to Plant Plectranthus in Mount Prospect, IL

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.

You can determine when it's possible to plant plectranthus in Mount Prospect by checking out the USDA zone info.


Planting Calendar for Plectranthus

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

Plectranthus do not do well in cold weather which tells us that you have to wait until it warms up after the last frost before you can plant them.

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

The earliest that you can plant plectranthus in Mount Prospect 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 plectranthus and expect a good harvest is probably August. If you wait any later than that and your plectranthus may not have a chance to fully mature. Starting your plectranthus indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Mount Prospect the average date of last frost happens on April 15. You should expect an average low temperature of -15°F in the coldest months of winter.

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Mount Prospect and it is different every year. Half of the time in Mount Prospect you get a frost after April 15 so make sure that you are prepared to protect your plectranthus if you have a late frost.

USDA Zone Info for Mount Prospect

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 Mount Prospect

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