One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to determine when to plant doronicum by checking out the USDA zone info for Zone 9b.

Planting Calendar for Doronicum

Frost tolerance for doronicum:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Doronicum do well in mild cold which means that you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant doronicum in Zone 9b is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant doronicum and expect a good harvest is probably October. Any later than that and your doronicum may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your doronicum indoors.

Last Frost Date

The average date of last frost is February 15 in Zone 9b. It might get as low as 25°F during the coldest months of winter.

It's important to remember that USDA zone info for Zone 9b is an average and the actual date of last frost changes from year to year. Half of the time in Zone 9b last frost occurs after February 15 so always be ready to cover your doronicum in the event of a late frost.

USDA Zone Info for Zone 9b

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 Zone 9b

You may be interested in your other planting guides for Zone 9b.