The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of getting a good idea when you can plant ageratum is to look at the USDA zone info for Flatwoods.

Planting Calendar for Ageratum

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

Since ageratum require warm weather you need to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant ageratum in Flatwoods is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant ageratum and expect a good harvest is probably August. If you wait any later than that and your ageratum may not have a chance to really do well. Starting your ageratum indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Remember that USDA zone info for Flatwoods is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Flatwoods you get surprised by a frost after April 15 so make sure that you are ready to protect your ageratum in the event of one of those late frosts.

USDA Zone Info for Flatwoods

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 Flatwoods

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