One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of estimating when it's possible to plant bleeding hearts is to refer to the USDA zone info for Berwyn.

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.

Bleeding Hearts can survive in a tiny bit of cold which means that you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant bleeding hearts in Berwyn 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 bleeding hearts and expect a good harvest is probably August. You probably don't want to wait any later than that or else your bleeding hearts may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your bleeding hearts indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Berwyn. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Berwyn is an average the actual date of last frost will vary from year to year. Half of the time in Berwyn it frosts late in the year after April 15 so make sure that you are ready to protect your bleeding hearts if you have a surprise late frost.

USDA Zone Info for Berwyn

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Berwyn

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