Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Riverside should be reviewed to estimate when to plant hamelia.

Planting Calendar for Hamelia

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

Hamelia are not cold tolerant which tells us that you really should wait until it warms up after all chance of frost has passed before you can plant them.

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

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Riverside. It might get as low as 25°F during the coldest months of winter.

It's important to remember that USDA zone info for Riverside may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Riverside you get surprised by a frost after February 15 so just be sure to be ready to cover your hamelia if you have a surprise late frost.

USDA Zone Info for Riverside

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 Riverside

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