When to Plant Yarrow in Gurnee, IL

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

A way of figuring out when it's a good idea to plant yarrow is to look at the USDA zone info for Gurnee.


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 quite a bit of cold which means that you can plant them earlier in the year than other plants that might not handle the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant yarrow
Possibly ok, but a risky time to plant yarrow
Probably not a good time to plant yarrow

The earliest that you can plant yarrow in Gurnee 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. You can get started a few weeks earlier by starting your yarrow indoors.

Last Frost Date

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

Remember that USDA zone info for Gurnee is just an average and the actual date of last frost changes from year to year. Since half of the time in Gurnee you get surprised by a frost after April 15 be ready to cover your yarrow in the event of a late frost.

USDA Zone Info for Gurnee

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 Gurnee

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