One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Bolingbrook you will be able to determine when it's the best time to plant parsley.

Planting Calendar for Parsley

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

Since parsley are moderately cold tolerant you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant parsley in Bolingbrook 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. If you wait any later than that and your parsley may not have a chance to really do well. Starting your parsley indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Bolingbrook. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Bolingbrook is just an average the actual date of last frost will vary from year to year. Half of the time in Bolingbrook last frost occurs after April 15 so be sure to be ready to cover your parsley in the event of a late frost.

USDA Zone Info for Bolingbrook

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 Bolingbrook

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