One of the first steps you take when you are determining your gardening schedule is find your 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 USDA zone info for Mill Valley can be reffered to in order to figure out when to plant creeping zinnia.

Planting Calendar for Creeping Zinnia

Frost tolerance for creeping zinnia:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Creeping Zinnia do ok in mild cold which means that you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant creeping zinnia in Mill Valley 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 creeping zinnia and expect a good harvest is probably September. If you wait any later than that and your creeping zinnia may not have a chance to grow to maturity. You can get started a little bit earlier by starting your creeping zinnia indoors.

Last Frost Date

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

Since the USDA zone info for Mill Valley is not always accurate the actual date of last frost changes from year to year. Since half of the time in Mill Valley last frost occurs after January 31 be ready to protect your creeping zinnia in the event of a late frost.

USDA Zone Info for Mill Valley

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 Mill Valley

You may be interested in your other planting guides for Mill Valley.