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 best time to plant gerbera in Harrisburg can be estimated by looking at the USDA zone info.

Planting Calendar for Gerbera

Frost tolerance for gerbera:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Gerbera do ok in a tiny bit of cold which tells us that you can plant them just a tiny bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant gerbera in Harrisburg 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 gerbera and expect a good harvest is probably August. If you wait any later than that and your gerbera may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your gerbera indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Harrisburg. You can expect an average low temperature of -5°F in the coldest months of winter.

It's important to remember that USDA zone info for Harrisburg is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Harrisburg you get surprised by a frost after April 15 so be sure to be ready to cover your gerbera in the event of a surprise late frost.

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.