The USDA Zone info is a great tool for gardeners to help us figure out 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.

A way of getting a good idea when it's possible to plant vinca vine is to look at the USDA zone info for Shelbyville.

Planting Calendar for Vinca Vine

Frost tolerance for vinca vine:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since vinca vine are moderately cold tolerant you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant vinca vine in Shelbyville 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 vinca vine and expect a good harvest is probably September. Any later than that and your vinca vine may not have a chance to grow to maturity. Starting your vinca vine 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 Shelbyville. It might get as low as -10°F during the coldest months of winter.

Keep in mind that USDA zone info for Shelbyville may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Shelbyville you get surprised by a frost after April 15 so make sure that you are ready to protect your vinca vine if you have one of those late frosts.

USDA Zone Info for Shelbyville

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 Shelbyville

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