One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant hamelia in Harrisburg should be determined by referring to the USDA zone info.

Planting Calendar for Hamelia

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

Since hamelia are not cold tolerant you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant hamelia in Harrisburg 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. Any later than that and your hamelia may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your hamelia indoors.

Last Frost Date

In Harrisburg the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Harrisburg is just an average the actual date of last frost is different every year. Half of the time in Harrisburg there is a last frost after April 15 so be sure to be ready to protect your hamelia in the event of one of those late frosts.

USDA Zone Info for Harrisburg

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Harrisburg

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