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.

In Princeton you can figure out when it's possible to plant asparagus peas by reviewing the USDA zone info.

Planting Calendar for Asparagus peas

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

Asparagus peas do well in moderate cold which means that you can plant them earlier than plants that are more sensitive to the cold.

The earliest that you can plant asparagus peas in Princeton 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 asparagus peas and expect a good harvest is probably August. If you wait any later than that and your asparagus peas may not have a chance to really do well. Starting your asparagus peas indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Princeton the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -30°F.

Remember that USDA zone info for Princeton is just an average and the actual date of last frost changes from year to year. Half of the time in Princeton it frosts late in the year after May 15 so be sure to be ready to protect your asparagus peas in the event of a surprise late frost.

USDA Zone Info for Princeton

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Princeton

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