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.

The earliest that you can plant rhubarb in Harrisonville should be estimated 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.

Since rhubarb are one of those plants that can tolerate a little bit of cold weather you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant rhubarb in Harrisonville 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. Any later than that and 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 Harrisonville. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Harrisonville is not always accurate the actual date of last frost is different every year. Since half of the time in Harrisonville you get surprised by a frost after April 15 be ready to protect your rhubarb in the event of a surprise late frost.

USDA Zone Info for Harrisonville

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 Harrisonville

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