WHEN I STARTED GARDENING as a young man, one of the first perennials that caught my eye was the bleeding heart (then Dicentra spectabilis, now Lamprocapnos spectabilis), which hung out its charming floral valentines in mid-April in my eastern Pennsylvania garden.
I planted a few in light shade atop a rock outcropping, while I put a few others in a full-sun flower bed, figuring they’d lead the parade of other perennials soon to appear.
The bleeding hearts in the rocky shade returned reliably year after year, but those in full sun
