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.

In Forest Lake you can estimate when it's a good idea to plant streptocarpella by reviewing the USDA zone info.

Planting Calendar for Streptocarpella

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

You really shouldn't plant streptocarpella until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant streptocarpella in Forest Lake 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. If you wait any later than that and your streptocarpella may not have a chance to grow to maturity. You can get started a little bit earlier by starting your streptocarpella indoors.

Last Frost Date

In Forest Lake the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for Forest Lake is just an average the actual date of last frost changes from year to year. Half of the time in Forest Lake you get surprised by a frost after May 15 so always be ready to protect your streptocarpella in the event of a surprise late frost.

USDA Zone Info for Forest Lake

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Forest Lake

You may be interested in your other planting guides for Forest Lake.