One of the first steps you take when you are getting a good idea your gardening schedule is find your 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.

In River Grove you can determine when it's a good idea to plant plectranthus by referring to the USDA zone info.

Planting Calendar for Plectranthus

Frost tolerance for plectranthus:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You can not plant plectranthus until after the last frost because they do not do well in cold weather.

The earliest that you can plant plectranthus in River Grove 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 grow to maturity. You can get started a few weeks earlier by starting your plectranthus indoors.

Last Frost Date

On average the last frost is on April 15 in River Grove. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for River Grove may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in River Grove last frost occurs after April 15 be ready to protect your plectranthus if you have a late frost.

USDA Zone Info for River Grove

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 River Grove

You may be interested in your other planting guides for River Grove.