The USDA Zone info is a great tool for gardeners to help us determine 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.

A way of estimating when you can plant ageratum is to use the USDA zone info for Mills River.

Planting Calendar for Ageratum

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

You can not plant ageratum until after the last frost because they are not cold tolerant.

The earliest that you can plant ageratum in Mills River 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. Any later than that and your ageratum may not have a chance to grow to maturity. Starting your ageratum indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Mills River. In the coldest months of winter you should expect an average low temperature of 0°F.

It's important to remember that USDA zone info for Mills River is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Mills River there is a last frost after April 15 so make sure that you are prepared to protect your ageratum in the event of one of those late frosts.

USDA Zone Info for Mills River

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Mills River

You may be interested in your other planting guides for Mills River.