The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for San Dimas you should be able to estimate when it's possible to plant coleus.

Planting Calendar for Coleus

Frost tolerance for coleus:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's probably a bad idea to 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 San Dimas 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. Any later than that and your coleus may not have a chance to fully mature. Starting your coleus indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is January 31 in San Dimas. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for San Dimas is just an average the actual date of last frost will vary from year to year. Half of the time in San Dimas there is a last frost after January 31 so make sure that you are prepared to protect your coleus in the event of a surprise late frost.

USDA Zone Info for San Dimas

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 San Dimas

You may be interested in your other planting guides for San Dimas.