One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

The earliest that you can plant platycodon in Newark should be figured out by reviewing 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.

Since platycodon are barely cold tolerant you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant platycodon in Newark 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. If you wait any later than that and your platycodon may not have a chance to fully mature. If you are starting your platycodon indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is January 31 in Newark. In the coldest months of winter you should expect an average low temperature of 30°F.

Since the USDA zone info for Newark is just an average the actual date of last frost will vary from year to year. Since half of the time in Newark it frosts late in the year after January 31 be ready to cover your platycodon in the event of one of those late frosts.

USDA Zone Info for Newark

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Newark

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