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

The USDA zone info for Pittsburg can be read to figure out when it's possible to plant ageratum.

Planting Calendar for Ageratum

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

Ageratum are not cold tolerant which means that it's important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant ageratum 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 ageratum and expect a good harvest is probably September. Any later than that and your ageratum may not have a chance to really do well. You can get started a few weeks earlier by starting your ageratum indoors.

Last Frost Date

The average date of last frost is February 15 in Pittsburg. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Pittsburg is not always accurate the actual date of last frost is different every year. Half of the time in Pittsburg last frost occurs after February 15 so just be sure to be ready to cover your ageratum in the event of one of those late frosts.

USDA Zone Info for Pittsburg

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Pittsburg

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