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 Mercer Island should be reviewed to estimate when it's a good idea to plant hamelia.

Planting Calendar for Hamelia

Frost tolerance for hamelia:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's probably a bad idea to plant hamelia until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant hamelia in Mercer Island is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant hamelia and expect a good harvest is probably August. If you wait any later than that and your hamelia may not have a chance to really do well. You can get started a little bit earlier by starting your hamelia indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Mercer Island 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 Mercer Island last frost occurs after March 15 so just be sure to be ready to protect your hamelia in the event of one of those late frosts.

USDA Zone Info for Mercer Island

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Mercer Island

You may be interested in your other planting guides for Mercer Island.