The USDA Zone info is a great tool for gardeners to help us determine 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.

In Springfield you can determine when it's a good idea to plant rhubarb by using the USDA zone info.

Planting Calendar for Rhubarb

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

Rhubarb do ok in mild cold which tells us that you can plant them just a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant rhubarb in Springfield 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 couple of weeks earlier by starting your rhubarb indoors.

Last Frost Date

On average the last frost is on April 15 in Springfield. It might get as low as -5°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Springfield is just an average and the actual date of last frost is different every year. Since half of the time in Springfield it frosts late in the year after April 15 be ready to cover your rhubarb if you have a surprise late frost.

USDA Zone Info for Springfield

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Springfield

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