The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Decatur you can estimate when you can plant yarrow by looking at the USDA zone info.

Planting Calendar for Yarrow

Frost tolerance for yarrow:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Yarrow do well in cold which means that you can start planting them much earlier than more sensitive plants.

The earliest that you can plant yarrow in Decatur is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant yarrow and expect a good harvest is probably September. If you wait any later than that and your yarrow may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your yarrow indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Decatur. In the coldest months of winter you should expect an average low temperature of 10°F.

Always keep in mind that USDA zone info for Decatur is just an average and the actual date of last frost will vary from year to year. Half of the time in Decatur it frosts late in the year after March 15 so just be sure to be ready to protect your yarrow if you have a late frost.

USDA Zone Info for Decatur

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Decatur

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