One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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 Corona should be read to determine when it's a good idea to plant chrysanthemum.

Planting Calendar for Chrysanthemum

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

Since chrysanthemum do not do well in cold weather it is important to wait until after the last frost before you can plant them.

The earliest that you can plant chrysanthemum in Corona is March. However, you really should wait until April 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 fully mature. You can get started a little bit earlier by starting your chrysanthemum indoors.

Last Frost Date

The average date of last frost is February 15 in Corona. You should expect an average low temperature of 25°F in the coldest months of winter.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Corona and it is different every year. Half of the time in Corona there is a last frost after February 15 so be sure to be ready to protect your chrysanthemum in the event of a late frost.

USDA Zone Info for Corona

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Corona

You may be interested in your other planting guides for Corona.