The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Shepherdsville should be reffered to in order to figure out when it's possible to plant purple rock cress.

Planting Calendar for Purple Rock Cress

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

Since purple rock cress are very cold tolerant you can plant them quite a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant purple rock cress in Shepherdsville 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 purple rock cress and expect a good harvest is probably September. If you wait any later than that and your purple rock cress may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your purple rock cress indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Shepherdsville. It might get as low as -5°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Shepherdsville is just an average and the actual date of last frost is different every year. Half of the time in Shepherdsville it frosts late in the year after April 15 so just be sure to be ready to protect your purple rock cress if you have a late frost.

USDA Zone Info for Shepherdsville

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 Shepherdsville

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