One of the first steps you take when you are estimating 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.

In Atherton you can figure out when you can plant creeping phlox by checking out the USDA zone info.

Planting Calendar for Creeping Phlox

Frost tolerance for creeping phlox:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Creeping Phlox do well in cold which tells us that you can start planting them much earlier than more sensitive plants.

The earliest that you can plant creeping phlox in Atherton is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant creeping phlox and expect a good harvest is probably October. Any later than that and your creeping phlox may not have a chance to fully mature. You can get started a little bit earlier by starting your creeping phlox indoors.

Last Frost Date

On average all chance of frost has passed is on February 15 in Atherton. It might get as low as 25°F during the coldest months of winter.

Remember that USDA zone info for Atherton is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Atherton there is a last frost after February 15 be ready to protect your creeping phlox if you have one of those late frosts.

USDA Zone Info for Atherton

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Atherton

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