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.

The first chance to plant tagetes in Mill Valley can be estimated by using the USDA zone info.

Planting Calendar for Tagetes

Frost tolerance for tagetes:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's probably not a good idea to plant tagetes until after all chance of frost has passed because they do not do well in cold weather.

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

Last Frost Date

On average all chance of frost has passed is on January 31 in Mill Valley. In the coldest months of winter you should expect an average low temperature of 30°F.

Keep in mind that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Mill Valley and it is different every year. Half of the time in Mill Valley it frosts late in the year after January 31 so be sure to be ready to cover your tagetes if you have one of those late frosts.

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.