The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Rhinelander should be looked at to figure out when it's the best time to plant plectranthus.

Planting Calendar for Plectranthus

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

You should 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 Rhinelander 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 plectranthus and expect a good harvest is probably August. Any later than that and your plectranthus may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your plectranthus indoors.

Last Frost Date

On average the last frost has passed is on May 15 in Rhinelander. You can expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Rhinelander may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Rhinelander there is a last frost after May 15 be ready to cover your plectranthus in the event of a surprise late frost.

USDA Zone Info for Rhinelander

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Rhinelander

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