When to Plant Peas in Willowbrook, IL

One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Willowbrook you can estimate when it's the best time to plant peas by checking out the USDA zone info.


Planting Calendar for Peas

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

You can plant peas a lot earlier in the year because they are very cold tolerant.

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

The earliest that you can plant peas in Willowbrook 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 peas and expect a good harvest is probably September. You probably don't want to wait any later than that or else your peas may not have a chance to fully mature. If you are starting your peas indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Willowbrook. You should expect an average low temperature of -15°F in the coldest months of winter.

Remember that USDA zone info for Willowbrook is just an average and the actual date of last frost changes from year to year. Half of the time in Willowbrook last frost occurs after April 15 so be sure to be ready to cover your peas in the event of one of those late frosts.

USDA Zone Info for Willowbrook

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 Willowbrook

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