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

By referring to the USDA zone info for Chicago Ridge it's possible to figure out when it's a good idea to plant pea.

Planting Calendar for Pea

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

You can plant pea much earlier in the year because they are very cold tolerant.

The earliest that you can plant pea in Chicago Ridge 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 pea and expect a good harvest is probably September. Any later than that and your pea may not have a chance to grow to maturity. If you are starting your pea 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 Chicago Ridge. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Chicago Ridge may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Chicago Ridge you get surprised by a frost after April 15 be ready to protect your pea in the event of one of those late frosts.

USDA Zone Info for Chicago Ridge

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Chicago Ridge

You may be interested in your other planting guides for Chicago Ridge.