Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Fairborn you can estimate when you can plant primula by referring to the USDA zone info.

Planting Calendar for Primula

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

Since primula do well in cold you can plant them much earlier in the year than more sensitive plants.

The earliest that you can plant primula in Fairborn 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 primula and expect a good harvest is probably September. Any later than that and your primula may not have a chance to fully mature. If you are starting your primula indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Fairborn. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Fairborn is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Fairborn there is a last frost after April 15 so make sure that you are ready to protect your primula in the event of a late frost.

USDA Zone Info for Fairborn

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 Fairborn

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