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

In Barnwell you can determine when it's the best time to plant platycodon by checking out the USDA zone info.

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.

You can plant platycodon just a tiny bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant platycodon in Barnwell 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. If you wait any later than that and your platycodon may not have a chance to really do well. You can get started a few weeks earlier by starting your platycodon indoors.

Last Frost Date

The average date of last frost is March 15 in Barnwell. In the coldest months of winter you should expect an average low temperature of 10°F.

Remember that USDA zone info for Barnwell is not always accurate and the actual date of last frost changes from year to year. Half of the time in Barnwell there is a last frost after March 15 so always be ready to protect your platycodon if you have a surprise late frost.

USDA Zone Info for Barnwell

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Barnwell

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