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 estimating when it's the best time to plant parsley is to consult the USDA zone info for Winnetka.

Planting Calendar for Parsley

Frost tolerance for parsley:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant parsley a little earlier in the year because they do well in moderate cold.

The earliest that you can plant parsley in Winnetka 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 parsley and expect a good harvest is probably September. You probably don't want to wait any later than that or else your parsley may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your parsley indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Winnetka. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Winnetka is an average the actual date of last frost is different every year. Half of the time in Winnetka it frosts late in the year after April 15 so always be ready to cover your parsley in the event of a late frost.

USDA Zone Info for Winnetka

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 Winnetka

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