One of the best tools that you have as gardeners to help us estimate 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.

The earliest that you can plant onions in Mcdonough can be determined by looking at the USDA zone info.

Planting Calendar for Onions

Frost tolerance for onions:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Onions do well in cold which tells us that you can get them planted much earlier than other plants that might not handle the cold.

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

The last month that you can plant onions and expect a good harvest is probably September. You probably don't want to wait any later than that or else your onions may not have a chance to grow to maturity. If you are starting your onions indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Mcdonough. You should expect an average low temperature of 10°F in the coldest months of winter.

It's important to remember that USDA zone info for Mcdonough is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Mcdonough there is a last frost after March 15 so just be sure to be ready to protect your onions if you have a surprise late frost.

USDA Zone Info for Mcdonough

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Mcdonough

You may be interested in your other planting guides for Mcdonough.