Common Name: Beardtongue
Named after two polar opposite colors of gemstones, onyx is in reference to its dark foliage and pearls refers to its soft lavender flowers with white interiors. From a distance, the flowers look white. Compared to 'Blackbeard', this is a taller, fuller plant with lighter colored flowers.
Like all of our Penstemons, this one takes the heat and humidity in stride but is also very cold hardy. It continues to provide terrific color in the landscape all season long.
Penstemons are very drought tolerant perennials that are easy to grow and are rarely bothered by insects or diseases. Plant them in full sun and watch as hummingbirds feast on their delicious nectar.
Height: 42.0 Inches
Spread: 38.0-42.0 Inches
Hardiness Zones: 3,4,5,6,7,8
Flower Color: White Shades, Pink shades
Foliage Color: Near-black shades
Sunlight: Full Sun (> 6 hrs. Direct Sun)
Water Requirements: Low Water Needs, Average Water Needs
Bloomtime: Early Summer, Midsummer
Attracts Wings: Attracts Hummingbirds, Bee Friendly
Growth Rate: Medium