The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant primroses in Upper Sandusky can be determined by using the USDA zone info.

Planting Calendar for Primroses

Frost tolerance for primroses:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since primroses are very cold tolerant you can plant them much earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant primroses in Upper Sandusky 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 primroses and expect a good harvest is probably September. If you wait any later than that and your primroses may not have a chance to really do well. You can get started a little bit earlier by starting your primroses indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Upper Sandusky. It might get as low as -10°F during the coldest months of winter.

It's important to remember that USDA zone info for Upper Sandusky is just an average and the actual date of last frost changes from year to year. Since half of the time in Upper Sandusky last frost occurs after April 15 be ready to cover your primroses if you have a surprise late frost.

USDA Zone Info for Upper Sandusky

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 Upper Sandusky

You may be interested in your other planting guides for Upper Sandusky.