Before planting it is a good idea to find your USDA Zone info to figure out 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.

A way of figuring out when it's the best time to plant yarrow is to refer to the USDA zone info for Ellisville.

Planting Calendar for Yarrow

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

Yarrow are very cold tolerant which tells us that you can start planting them much earlier than plants that are more sensitive to the cold.

The earliest that you can plant yarrow in Ellisville 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. Any later than that and your yarrow may not have a chance to grow to maturity. Starting your yarrow indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Ellisville. You should expect an average low temperature of 10°F in the coldest months of winter.

It's important to remember that USDA zone info for Ellisville is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Ellisville there is a last frost after March 15 so just be sure to be ready to cover your yarrow in the event of a surprise late frost.

USDA Zone Info for Ellisville

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 Ellisville

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