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 USDA zone info for Harrisburg can be reviewed to estimate when it's possible to plant new zealand spinach.

Planting Calendar for New Zealand spinach

Frost tolerance for new zealand spinach:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

New Zealand spinach are moderately cold tolerant which tells us that you can start planting them earlier than more sensitive plants.

The earliest that you can plant new zealand spinach in Harrisburg is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant new zealand spinach and expect a good harvest is probably September. If you wait any later than that and your new zealand spinach may not have a chance to grow to maturity. If you are starting your new zealand spinach indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Harrisburg. It might get as low as -5°F during the coldest months of winter.

Remember that USDA zone info for Harrisburg is an average and the actual date of last frost changes from year to year. Since half of the time in Harrisburg you get a frost after April 15 be ready to cover your new zealand spinach 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.