One of the best tools that you have as gardeners to help us estimate 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 Trenton should be reffered to in order to figure out when it's the best time to plant parsnip.

Planting Calendar for Parsnip

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

You can plant parsnip a bit earlier in the year because they do well in moderate cold.

The earliest that you can plant parsnip in Trenton 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 parsnip and expect a good harvest is probably September. Any later than that and your parsnip may not have a chance to fully mature. If you are starting your parsnip indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Trenton. It might get as low as -15°F during the coldest months of winter.

Remember that USDA zone info for Trenton may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Trenton you get a frost after April 15 be ready to cover your parsnip in the event of one of those late frosts.

USDA Zone Info for Trenton

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°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 -10°F.

Plants to Grow in Trenton

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