One of the first steps you take when you are estimating 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.

A common way of determining when it's possible to plant torenia is to examine the USDA zone info for Molalla.

Planting Calendar for Torenia

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

Torenia require warm weather which tells us that you must wait until it warms up after the last frost before you can plant them.

The earliest that you can plant torenia in Molalla 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. Any later than that and your torenia may not have a chance to fully mature. You can get started a little bit earlier by starting your torenia indoors.

Last Frost Date

The average date of last frost is March 15 in Molalla. In the coldest months of winter you should expect an average low temperature of 15°F.

Since the USDA zone info for Molalla is just an average the actual date of last frost is different every year. Half of the time in Molalla you get surprised by a frost after March 15 so make sure that you are ready to cover your torenia in the event of a late frost.

USDA Zone Info for Molalla

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Molalla

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