Before planting it is a good idea to find your USDA Zone info to figure out 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.

One way of making a decision about when it's the best time to plant torenia is to look at the USDA zone info for Walled Lake.

Planting Calendar for Torenia

Frost tolerance for torenia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since torenia require warm weather it's important to wait until after the last frost before you can plant them.

The earliest that you can plant torenia in Walled Lake 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 torenia and expect a good harvest is probably August. If you wait any later than that and your torenia may not have a chance to fully mature. If you are starting your torenia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Walled Lake the average date of last frost happens on April 15. It might get as low as -10°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Walled Lake is an average and the actual date of last frost changes from year to year. Half of the time in Walled Lake you get surprised by a frost after April 15 so make sure that you are prepared to cover your torenia if you have a surprise late frost.

USDA Zone Info for Walled Lake

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Walled Lake

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