Before planting it is a good idea to find your USDA Zone info to estimate 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.

You will be able to estimate when it's a good idea to plant gomphrena by referring to the USDA zone info for Florence.

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.

Gomphrena are one of those plants that can tolerate a tiny bit of cold weather which tells us that you can start planting them slightly earlier than plants that are more sensitive to the cold.

The earliest that you can plant gomphrena in Florence 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 gomphrena and expect a good harvest is probably September. Any later than that and your gomphrena may not have a chance to fully mature. You can get started a little bit earlier by starting your gomphrena indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Florence. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Florence is an average the actual date of last frost changes from year to year. Since half of the time in Florence there is a last frost after February 15 be ready to cover your gomphrena if you have one of those late frosts.

USDA Zone Info for Florence

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Florence

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