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

You should be able to figure out when it's a good idea to plant gomphrena by looking at the USDA zone info for Shelbyville.

Planting Calendar for Gomphrena

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

Since gomphrena are one of those plants that can tolerate a tiny bit of cold weather you can plant them just a tiny bit earlier in the year than more sensitive plants.

The earliest that you can plant gomphrena in Shelbyville 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 gomphrena and expect a good harvest is probably August. If you wait any later than that and your gomphrena may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your gomphrena indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Shelbyville. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Shelbyville is just an average the actual date of last frost changes from year to year. Half of the time in Shelbyville you get surprised by a frost after April 15 so always be ready to cover your gomphrena in the event of one of those late frosts.

USDA Zone Info for Shelbyville

Here is the info for USDA Zone 7a.

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

This means that on a really cold year, the coldest it will get is 0°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.