Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Grosse Pointe you can figure out when it's possible to plant bunching onions by checking out the USDA zone info.

Planting Calendar for Bunching Onions

Frost tolerance for bunching onions:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Bunching Onions do ok in mild cold which tells us that you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant bunching onions in Grosse Pointe is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant bunching onions and expect a good harvest is probably August. You probably don't want to wait any later than that or else your bunching onions may not have a chance to grow to maturity. You can get started a little bit earlier by starting your bunching onions indoors.

Last Frost Date

The average date of last frost is April 15 in Grosse Pointe. 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 just an average and the actual date of last frost is different every year. Half of the time in Grosse Pointe you get surprised by a frost after April 15 so always be ready to protect your bunching onions in the event of 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.