Hypearl Compact Red48" tall
It's one of the hundreds of interesting selections in this year's catalog from plantsman Tony Avent and his crew at PD Nursery.
Tony said the hardiness range is 6a to 9b so we are just barely safe to plant it but with winter protection ... .
Several years ago I received a garden writer sample plant of Hypericum Hypearls Renu from Blooms of Bressingham and it is thriving seven years later in part shade.
Just in case you were planning to go looking for Blooms of Bressingham they now call themselves Must Have Perennials (wholesale) and rozanne and friends (retail).
Hypericum, St. John's Wort, in general, is considered a butterfly attracting plant and there are many varieties.
Common St. John's Wort, Hypericum calycinum, has a bad reputation for being quite invasive from Canada to Texas.
The species St. John’s wort (Hypericum spp.) is also recommended as a part-shade ground cover for our zone by Gardening Know How.
Plant Delights Nursery online catalog says,
"Just exactly who is St. John, and why does he have worts? "Botanically speaking, 'wort' is an old English word meaning 'plant', not a skin disorder. Hypericum is a genus of perennial wildflowers that has been associated with John the Apostle for hundreds of years because it blooms on or around the Feast of St. John in midsummer.