One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to estimate when it's a good idea to plant platycodon by looking at the USDA zone info for King City.

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.

Since platycodon 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 other plants that might not handle the cold.

The earliest that you can plant platycodon in King City 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. You probably don't want to wait any later than that or else your platycodon may not have a chance to really do well. You can get started a little bit earlier by starting your platycodon indoors.

Last Frost Date

In King City the average date of last frost happens on February 15. In the coldest months of winter you should expect an average low temperature of 20°F.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for King City and it can change quite a bit from year to year. Since half of the time in King City last frost occurs after February 15 be ready to cover your platycodon in the event of a late frost.

USDA Zone Info for King City

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 King City

You may be interested in your other planting guides for King City.