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 Harrisburg should be used to figure out when it's the best time to plant moon vine.

Planting Calendar for Moon Vine

Frost tolerance for moon vine:	Not tolerant of frost.
When to plant:	After the last frost.

Since moon vine are not cold tolerant it's necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant moon vine 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 moon vine and expect a good harvest is probably August. You probably don't want to wait any later than that or else your moon vine may not have a chance to really do well. You can get started a couple of weeks earlier by starting your moon vine indoors.

Last Frost Date

In Harrisburg the average date of last frost happens on April 15. It might get as low as -5°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Harrisburg and it is different every year. Half of the time in Harrisburg you get surprised by a frost after April 15 so make sure that you are prepared to cover your moon vine if you have a 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.