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

You should be able to figure out when it's possible to plant bleeding hearts by reviewing the USDA zone info for Wilsonville.

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.

Since bleeding hearts are barely cold tolerant you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant bleeding hearts in Wilsonville 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. If you wait any later than that and your bleeding hearts may not have a chance to fully mature. If you are starting your bleeding hearts indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost is on March 15 in Wilsonville. You can expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Wilsonville is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Wilsonville you get surprised by a frost after March 15 be ready to protect your bleeding hearts in the event of a surprise late frost.

USDA Zone Info for Wilsonville

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Wilsonville

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