Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of determining when it's the best time to plant armeria is to check out the USDA zone info for Corona.

Planting Calendar for Armeria

Frost tolerance for armeria:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Armeria do well in pretty solid cold which means that you can plant them much earlier in the year than other frost tender plants.

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

Last Frost Date

On average the last frost has passed is on February 15 in Corona. You can expect an average low temperature of 25°F in the coldest months of winter.

Keep in mind that USDA zone info for Corona may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Corona it frosts late in the year after February 15 be ready to cover your armeria in the event of a surprise 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.