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

One way of determining when it's a good idea to plant eggplants is to examine the USDA zone info for River Grove.

Planting Calendar for Eggplants

Frost tolerance for eggplants:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You should not plant eggplants until after the last frost because they are not cold tolerant.

The earliest that you can plant eggplants in River Grove is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant eggplants and expect a good harvest is probably August. You probably don't want to wait any later than that or else your eggplants may not have a chance to really do well. Starting your eggplants indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Since the USDA zone info for River Grove is just an average the actual date of last frost will vary from year to year. Since half of the time in River Grove you get surprised by a frost after April 15 be ready to protect your eggplants if you have one of those late frosts.

USDA Zone Info for River Grove

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 River Grove

You may be interested in your other planting guides for River Grove.