The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to figure out when you can plant rhubarb by looking at the USDA zone info for Elmhurst.

Planting Calendar for Rhubarb

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

Rhubarb do well in moderate cold which means that you can start planting them earlier than more sensitive plants.

The earliest that you can plant rhubarb in Elmhurst 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 rhubarb and expect a good harvest is probably September. You probably don't want to wait any later than that or else your rhubarb may not have a chance to fully mature. You can get started a little bit earlier by starting your rhubarb indoors.

Last Frost Date

The average date of last frost is April 15 in Elmhurst. It might get as low as -15°F during the coldest months of winter.

Keep in mind that USDA zone info for Elmhurst is not always accurate and the actual date of last frost is different every year. Since half of the time in Elmhurst it frosts late in the year after April 15 be ready to cover your rhubarb in the event of one of those late frosts.

USDA Zone Info for Elmhurst

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 Elmhurst

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