One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to figure out when to plant bunching onions by looking at the USDA zone info for Pittsburg.

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 moderate cold which means that you can start planting them slightly earlier than other frost tender plants.

The earliest that you can plant bunching onions in Pittsburg 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. If you wait any later than that and your bunching onions may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your bunching onions indoors.

Last Frost Date

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

Remember that USDA zone info for Pittsburg is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Pittsburg you get surprised by a frost after April 15 be ready to protect your bunching onions in the event of a surprise late frost.

USDA Zone Info for Pittsburg

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 Pittsburg

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