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.

The earliest that you can plant cilantro in Winnetka can be determined by reviewing the USDA zone info.

Planting Calendar for Cilantro

Frost tolerance for cilantro:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Cilantro are barely cold tolerant which tells us that you can plant them slightly earlier than other frost tender plants.

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

The last month that you can plant cilantro and expect a good harvest is probably August. Any later than that and your cilantro may not have a chance to fully mature. If you are starting your cilantro indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Winnetka the average date of last frost happens on April 15. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Winnetka is an average the actual date of last frost changes from year to year. Half of the time in Winnetka there is a last frost after April 15 so always be ready to cover your cilantro if you have 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.