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.

A way of getting a good idea when it's the best time to plant platycodon is to check out the USDA zone info for Brea.

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 are one of those plants that can tolerate a tiny bit of cold weather which tells us that you can start planting them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant platycodon in Brea 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. Starting your platycodon indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Brea. You can expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Brea is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Brea you get surprised by a frost after January 31 be ready to protect your platycodon if you have one of those late frosts.

USDA Zone Info for Brea

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 Brea

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