One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Apex you can figure out when it's the best time to plant onions by checking out 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 pretty solid cold which tells us that you can plant them earlier in the year than other frost tender plants.

The earliest that you can plant onions in Apex 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. If you wait any later than that and your onions may not have a chance to fully mature. Starting your onions indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Apex. You should expect an average low temperature of 5°F in the coldest months of winter.

Always keep in mind that USDA zone info for Apex is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Apex there is a last frost after April 15 be ready to protect your onions in the event of one of those late frosts.

USDA Zone Info for Apex

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°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 10°F.

Plants to Grow in Apex

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