The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can determine when it's a good idea to plant stevia in Marengo by referring to the USDA zone info.

Planting Calendar for Stevia

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

Since stevia require warm weather it is necessary to wait until after the last frost before you can plant them.

The earliest that you can plant stevia in Marengo 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 stevia and expect a good harvest is probably August. If you wait any later than that and your stevia may not have a chance to fully mature. You can get started a little bit earlier by starting your stevia indoors.

Last Frost Date

The average date of last frost is April 15 in Marengo. It might get as low as -15°F during the coldest months of winter.

Keep in mind that USDA zone info for Marengo is an average and the actual date of last frost is different every year. Since half of the time in Marengo you get a frost after April 15 be ready to cover your stevia if you have a late frost.

USDA Zone Info for Marengo

Here is the info for USDA Zone 5b.

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

Plants to Grow in Marengo

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