One of the best tools that you have as gardeners to help us determine 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 Morro Bay can be looked at to determine when it's possible to plant hardy hibiscus.

Planting Calendar for Hardy Hibiscus

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

You can plant hardy hibiscus quite a bit earlier in the year because they are one of those plants that can tolerate quite a bit of cold weather.

The earliest that you can plant hardy hibiscus in Morro Bay 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 hardy hibiscus and expect a good harvest is probably October. Any later than that and your hardy hibiscus may not have a chance to fully mature. You can get started a little bit earlier by starting your hardy hibiscus indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Morro Bay. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Morro Bay is just an average the actual date of last frost is different every year. Since half of the time in Morro Bay it frosts late in the year after February 15 be ready to cover your hardy hibiscus if you have one of those late frosts.

USDA Zone Info for Morro Bay

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 Morro Bay

You may be interested in your other planting guides for Morro Bay.