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 San Dimas can be read to determine when you can plant chrysanthemum.

Planting Calendar for Chrysanthemum

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

You should not plant chrysanthemum until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant chrysanthemum 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 chrysanthemum and expect a good harvest is probably September. You probably don't want to wait any later than that or else your chrysanthemum may not have a chance to grow to maturity. If you are starting your chrysanthemum indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Remember that the actual date of last frost is an average because it is based on the USDA zone info for San Dimas and it can change quite a bit from year to year. Half of the time in San Dimas you get surprised by a frost after January 31 so make sure that you are prepared to cover your chrysanthemum if you have 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.