Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Campbellsville you can estimate when it's possible to plant pearl onions by referring to the USDA zone info.

Planting Calendar for Pearl onions

Frost tolerance for pearl onions:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since pearl onions are barely cold tolerant you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant pearl onions in Campbellsville is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant pearl onions and expect a good harvest is probably August. You probably don't want to wait any later than that or else your pearl onions may not have a chance to fully mature. You can get started a little bit earlier by starting your pearl onions indoors.

Last Frost Date

In Campbellsville the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -5°F.

Always keep in mind that USDA zone info for Campbellsville is just an average and the actual date of last frost changes from year to year. Half of the time in Campbellsville it frosts late in the year after April 15 so make sure that you are prepared to protect your pearl onions if you have a late frost.

USDA Zone Info for Campbellsville

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Campbellsville

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