Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can determine when it's a good idea to plant ageratum in Granite Falls by referring to the USDA zone info.

Planting Calendar for Ageratum

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

Since ageratum do not do well in cold weather it is necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant ageratum in Granite Falls 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 fully mature. Starting your ageratum indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Granite Falls. In the coldest months of winter you should expect an average low temperature of 5°F.

Since the USDA zone info for Granite Falls may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Granite Falls there is a last frost after April 15 be ready to protect your ageratum in the event of one of those late frosts.

USDA Zone Info for Granite Falls

Here is the info for USDA Zone 7b.

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

Plants to Grow in Granite Falls

You may be interested in your other planting guides for Granite Falls.