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

The USDA zone info for Mill Valley should be reffered to in order to determine when it's a good idea to plant coleus.

Planting Calendar for Coleus

Frost tolerance for coleus:	Not tolerant of frost.
When to plant:	After the last frost.

You really shouldn't plant coleus until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant coleus 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 coleus and expect a good harvest is probably September. If you wait any later than that and your coleus may not have a chance to really do well. If you are starting your coleus indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Remember that USDA zone info for Mill Valley is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Mill Valley you get surprised by a frost after January 31 so just be sure to be ready to cover your coleus 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.