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

By checking out the USDA zone info for Chesterton it's possible to estimate when to plant ageratum.

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 have 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 Chesterton 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. You probably don't want to wait any later than that or else your ageratum may not have a chance to really do well. If you are starting your ageratum indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Chesterton. In the coldest months of winter you should expect an average low temperature of -10°F.

Remember that USDA zone info for Chesterton may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Chesterton it frosts late in the year after April 15 so always be ready to protect your ageratum if you have a late frost.

USDA Zone Info for Chesterton

Here is the info for USDA Zone 6a.

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

Plants to Grow in Chesterton

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