One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By referring to the USDA zone info for Grosse Pointe you will be able to determine when to plant marigold.

Planting Calendar for Marigold

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

Since marigold require warm weather you really should wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant marigold in Grosse Pointe 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. You probably don't want to wait any later than that or else your marigold may not have a chance to fully mature. You can get started a few weeks earlier by starting your marigold indoors.

Last Frost Date

In Grosse Pointe the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -5°F.

It's important to remember that USDA zone info for Grosse Pointe is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Grosse Pointe it frosts late in the year after April 15 so be sure to be ready to cover your marigold if you have a surprise late frost.

USDA Zone Info for Grosse Pointe

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 Grosse Pointe

You may be interested in your other planting guides for Grosse Pointe.