One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of figuring out when it's possible to plant missouri primrose is to use the USDA zone info for Harrisonville.

Planting Calendar for Missouri Primrose

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

Missouri Primrose can survive in moderate cold which means that you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant missouri primrose 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 missouri primrose and expect a good harvest is probably September. Any later than that and your missouri primrose may not have a chance to grow to maturity. Starting your missouri primrose indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Harrisonville. In the coldest months of winter you should expect an average low temperature of -10°F.

Remember that USDA zone info for Harrisonville is an average and the actual date of last frost changes from year to year. Since half of the time in Harrisonville there is a last frost after April 15 be ready to protect your missouri primrose in the event of one of those late frosts.

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.