Penstemon ‘Evelyn’ (Beardtongue)

Penstemon ‘Evelyn’ is a beautiful perennial with a mounding habit, known for its profusion of tubular, rose-pink flowers that attract pollinators throughout the summer months. The foliage is a deep, glossy green, forming a striking contrast with the delicate flowers.

Penstemon ‘Evelyn’: An In-depth Look

Native: This cultivar is not a native species itself but is derived from parent species native to North America.

Plant Type and Habit: It’s a herbaceous perennial with a semi-evergreen habit in milder climates. It has a clump-forming habit that makes it suitable as a border plant.

Size: Typically, Penstemon ‘Evelyn’ reaches about 18 inches (45 cm) in height and spreads.

Flowers: The flowers are a distinctive rose-pink, tubular, and clustered on slender, branching inflorescences. They showcase a white throat with dark red lines.

Bloom Time: Expect a spectacular show from mid to late summer.

Foliage: The foliage is glossy, deep green, and lance-shaped with a slightly serrated margin.

Uses: ‘Evelyn’ is versatile, suitable for border plantings, container gardens, rock gardens, and as part of pollinator-friendly landscapes.

Award: Recipient of the prestigious Award of Garden Merit of the Royal Horticultural Society.

Hardiness: This plant boasts commendable hardiness, capable of thriving in USDA zones 7-10.

Pollinators: Penstemon is attractive to various pollinators, especially bees, and hummingbirds, drawn to their nectar-rich flowers.

Toxicity: Penstemons are not known to be toxic to humans or pets. However, it’s always prudent to prevent ingestion of any non-edible plants.

Deer and Rabbit: An added bonus is its resistance to deer and rabbits, a characteristic attributed to the texture and taste of the foliage that these animals generally find unappealing.

Drought: Once established, ‘Evelyn’ shows a good level of drought tolerance. While it prefers consistent moisture levels, it can endure short periods of dry conditions, a boon for gardeners in more arid climates.

Invasiveness: ‘Evelyn’ is not known for being invasive. It’s a well-behaved garden resident that stays within its allocated space, making it a reliable and predictable perennial option.

Penstemon Growing Tips

Light: Full sun (at least 6 hours of direct sun per day). Tolerates light shade.

Soil: Well-drained soil is crucial. Penstemons prefer rocky or sandy lean soils rather than rich garden loam. Avoid overly moist, poorly drained soils.

Water: Water well until plants are established. Once established, Penstemons tolerate some drought. Allow the soil to dry out between waterings. Over-watering or wet soils can lead to root rot.

Fertilizer: Penstemon plants generally do not require heavy fertilization and can thrive in relatively lean soil conditions. However, providing them with a light application of an organic fertilizer in the fall can help boost their growth and flowering potential.

Pruning: Deadhead spent flowers to encourage continuous blooming. Cut back plants in late autumn or early spring to promote vigorous growth.

Mulching: Mulching Penstemon can help regulate ground temperature and suppress weed growth. Choose a mulch that does not hold water. Use organic materials like shredded bark, compost, or pine straw. Avoiding direct contact with the stems to prevent rot and pest issues.

Propagation: Propagate by softwood cuttings in early summer or semi-hardwood cuttings in midsummer. Propagate by division in spring.

Pests and Diseases: No serious pest or disease issues, but watch for slugs, snails, and nematodes. Fungal diseases can occur in overly wet conditions; ensure good air circulation and avoid overhead watering to prevent issues like powdery mildew, leaf spot, and root rot. Rust can cause small, rust-colored pustules on leaves and stems, leading to defoliation and stunted growth.