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.

One way of getting a good idea when it's possible to plant marigold is to consult the USDA zone info for Dearborn Heights.

Planting Calendar for Marigold

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

Marigold require warm weather which means that you need to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant marigold in Dearborn Heights 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 marigold and expect a good harvest is probably August. If you wait any later than that and your marigold may not have a chance to really do well. You can get started a few weeks earlier by starting your marigold indoors.

Last Frost Date

The average date of last frost is April 15 in Dearborn Heights. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Dearborn Heights is an average the actual date of last frost changes from year to year. Half of the time in Dearborn Heights last frost occurs after April 15 so be sure to be ready to protect your marigold if you have a late frost.

USDA Zone Info for Dearborn Heights

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 Dearborn Heights

You may be interested in your other planting guides for Dearborn Heights.