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.

You should be able to figure out when it's possible to plant platycodon by using the USDA zone info for Florence.

Planting Calendar for Platycodon

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

Platycodon can survive in some cold which tells us that you can plant them just a tiny bit earlier in the year than more sensitive plants.

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

Last Frost Date

On average the last frost has passed is on February 15 in Florence. In the coldest months of winter you can expect an average low temperature of 20°F.

Just be sure to remember that USDA zone info for Florence is not always accurate and the actual date of last frost is different every year. Half of the time in Florence you get a frost after February 15 so always be ready to protect your platycodon if you have a late frost.

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.