Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Corte Madera you can figure out when it's a good idea to plant platycodon 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 do ok in moderate cold you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant platycodon in Corte Madera 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. Any later than that and your platycodon may not have a chance to grow to maturity. Starting your platycodon indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Since the USDA zone info for Corte Madera is not always accurate the actual date of last frost will vary from year to year. Half of the time in Corte Madera you get surprised by a frost after January 31 so make sure that you are ready to cover your platycodon if you have a surprise late frost.

USDA Zone Info for Corte Madera

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 Corte Madera

You may be interested in your other planting guides for Corte Madera.