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| Category: Perennial |
| Family: Scrophulariaceae (Figworts) |
| Origin: Mexico (North America) |
| Evergreen: Yes |
| Flower Color: Mixed |
| Bloomtime: Spring/Summer |
| Parentage: (Penstemon cobaea x P. hartwegii) |
| Height: 2-3 feet |
| Width: 2-3 feet |
| Exposure: Sun or Shade |
| Deer Tolerant: Yes |
| Irrigation (H2O Info): Medium Water Needs |
| Winter Hardiness: <15° F |
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Penstemon x gloxinioides (seedling) (Border Penstemon) - These evergreen perennials or sub-shrubs are grown from seed. They are often called Penstemon x gloxinioides and are considered to be a complex cross involving Penstemon cobaea, P. hartwegii, P.campanulata, P. gentianoides and P. isophyllus. Growing to 2-3 feet tall with stems heavily clothed with lance-shaped green leaves and bearing large trumpet-shaped flowers in an assortment of colors with white throats. The flowers are held on dense spikes that appear in a succession of flowering peaks from late spring until fall and often appear year-round in coastal gardens. The flowers attract hummingbirds and butterflies into the garden. Plant in full sun along the coast and provide some light shade inland. Tolerate and even thrive in poor soils and alkaline conditions but require relatively good drainage. Can survive very dry conditions in cooler coastal gardens but look better with occasional irrigation and require it in hotter locations. Pinch plants after the first bloom to promote a quick re-bloom and cut back hard in winter to encourage a new flush of dense growth in spring. While extremely showy, Border Penstemon are notably short lived and for plantings to look best, they should be replanted every 3-5 years. Hardy to below 15° F and even much lower if soil is not moist.
The information about Penstemon x gloxinioides (seedling) that is displayed on this web page is based on research conducted in our nursery's horticultural library and from reliable online resources. We will also include observations made about this plant as it grows in our nursery gardens and other gardens that we have visited, as well how the crops have performed in containers in our nursery field. We also incorporate comments that we receive from others and welcome hearing from anyone with additional information, particularly if they share cultural information that aids others growing this plant.
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