One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

The USDA zone info for Marengo can be reffered to in order to figure out when it's a good idea to plant millet.

Planting Calendar for Millet

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

You can not plant millet until after the last frost because they require warm weather.

The earliest that you can plant millet 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 millet and expect a good harvest is probably August. Any later than that and your millet may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your millet indoors.

Last Frost Date

On average the last frost is on April 15 in Marengo. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Marengo is just an average the actual date of last frost will vary from year to year. Since half of the time in Marengo you get surprised by a frost after April 15 be ready to cover your millet in the event of a surprise 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.