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

One way of figuring out when it's possible to plant streptocarpella is to consult the USDA zone info for Rhinelander.

Planting Calendar for Streptocarpella

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

It's a bad idea to plant streptocarpella until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant streptocarpella 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 streptocarpella and expect a good harvest is probably August. You probably don't want to wait any later than that or else your streptocarpella may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your streptocarpella indoors.

Last Frost Date

On average the last frost has passed is on May 15 in Rhinelander. It might get as low as -30°F during the coldest months of winter.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Rhinelander and it will vary from year to year. Since half of the time in Rhinelander it frosts late in the year after May 15 be ready to cover your streptocarpella if you have one of those late frosts.

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.