One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of estimating when it's the best time to plant platycodon is to check out the USDA zone info for Fountain.

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 do ok in some cold which tells us that you can plant them slightly earlier in the year than other plants that might not handle the cold.

The earliest that you can plant platycodon in Fountain 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 platycodon and expect a good harvest is probably August. You probably don't want to wait any later than that or else your platycodon may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your platycodon indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Fountain. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Fountain is just an average the actual date of last frost changes from year to year. Half of the time in Fountain last frost occurs after April 15 so be sure to be ready to protect your platycodon in the event of one of those late frosts.

USDA Zone Info for Fountain

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 Fountain

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