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.

A common way of making a decision about when to plant millet is to check out the USDA zone info for Granite City.

Planting Calendar for Millet

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

It's probably not a good idea to plant millet until after the last frost because they are not cold tolerant.

The earliest that you can plant millet in Granite City 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. Starting your millet indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Granite City. In the coldest months of winter you can expect an average low temperature of -5°F.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Granite City and it will vary from year to year. Half of the time in Granite City it frosts late in the year after April 15 so make sure that you are ready to protect your millet in the event of a surprise late frost.

USDA Zone Info for Granite City

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Granite City

You may be interested in your other planting guides for Granite City.