Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant bleeding hearts in Princeton can be determined by looking at the USDA zone info.

Planting Calendar for Bleeding Hearts

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

You can plant bleeding hearts slightly earlier in the year because they are one of those plants that can tolerate a tiny bit of cold weather.

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

Last Frost Date

The average date of last frost is May 15 in Princeton. In the coldest months of winter you should expect an average low temperature of -30°F.

Just be sure to remember that USDA zone info for Princeton is not always accurate and the actual date of last frost changes from year to year. Half of the time in Princeton there is a last frost after May 15 so just be sure to be ready to cover your bleeding hearts in the event of one of those late frosts.

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.