One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Tuscola you should be able to estimate when it's possible to plant missouri primrose.

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 mild cold which tells us that you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant missouri primrose in Tuscola 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. If you wait any later than that and your missouri primrose may not have a chance to really do well. Starting your missouri primrose indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Tuscola. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Tuscola is an average the actual date of last frost is different every year. Half of the time in Tuscola you get a frost after April 15 so just be sure to be ready to cover your missouri primrose in the event of a late frost.

USDA Zone Info for Tuscola

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 Tuscola

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