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.

A way of figuring out when it's possible to plant yarrow is to consult the USDA zone info for Cedar Lake.

Planting Calendar for Yarrow

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

Since yarrow are very cold tolerant you can plant them earlier in the year than other frost tender plants.

The earliest that you can plant yarrow in Cedar Lake 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. You probably don't want to wait any later than that or else your yarrow may not have a chance to grow to maturity. If you are starting your yarrow 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 Cedar Lake. It might get as low as -15°F during the coldest months of winter.

Keep in mind that USDA zone info for Cedar Lake is an average and the actual date of last frost is different every year. Half of the time in Cedar Lake last frost occurs after April 15 so always be ready to protect your yarrow if you have a surprise late frost.

USDA Zone Info for Cedar Lake

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Cedar Lake

You may be interested in your other planting guides for Cedar Lake.