Penstemon calycosus, commonly called longsepal beardtongue, is a species of plant in the plantain family (Plantaginaceae). It is native to eastern North America, where it native to the Upper South and Midwestern United States. It expanded its range into the northeast United States in the early 20th century. Its natural habitat is in open woodlands, prairies, and bluffs, often over limestone.Penstemon calycosus is an herbaceous perennial, growing to around 3 feet tall. Its flowers are lavender to purple and tubular. It blooms in late spring and early summer, ranging May to July depending on latitude.Penstemon calycosus is similar to the more widespread Penstemon digitalis. P. calycosus can be distinguished from P. digitalis by its purple flowers and longer, attenuate sepals.
Long-sepal beardtongue is fairly resistant to disease and typically not likely to suffer from illnesses. Nevertheless, it can be vulnerable to pests and diseases present in its environment. These problems are usually mild. For care, this plant needs moderate maintenance. It should be pruned on a regular basis to keep a tidy appearance and encourage healthy growth. Fertilizing can also help increase flowering. Long-sepal beardtongue is appropriate for anyone with outdoor space, such as a garden or patio, and does not demand extensive gardening experience. It may need more attention when grown indoors.
How to keep Penstemon Calycosus.
Light
Long-sepal beardtongue is a sun-loving, herbaceous perennial that comes from open habitats and commonly grows in meadows and grasslands. It prefers full sun but can also tolerate partial sun.
Temperature
Long-sepal beardtongue can tolerate a wide variety of temperature conditions, but its range may still be restricted by different combinations of moisture and heat. It does best in warm summer conditions with sufficient rainfall or irrigation. Extended stretches of cloudy, rainy weather, as well as prolonged high temperatures, raise the risk of Long-sepal beardtongue dying. In winter, protecting it properly from the cold can increase its chances of survival.
Fertilizer
The best time to fertilize a Long-sepal beardtongue is in early spring, as it comes out of dormancy and begins active growth. Fertilization supplies essential nutrients needed for healthy growth. Although Long-sepal beardtongue has relatively low fertilizer requirements, applying fertilizer annually can improve its survival and promote better, longer-lasting flowers.
Pruning
Long-sepal beardtongue is a perennial plant featuring tubular flowers and prominent stamens. For optimal growth and an abundance of blooms, prune it from early to late spring. Start by removing any dead stems and thinning out crowded areas to improve air circulation. After the plant blooms, pruning helps maintain its shape, encourages additional flowering, and reduces the risk of disease.
Pot & Repot
For long-sepal beardtongue to thrive in pots, it's essential to have excellent drainage to prevent water accumulation, which can cause root rot and other problems. Use a well-aerated potting mix that offers optimal moisture control.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Penstemon
- Family
- Plantaginaceae
- Hardiness Zone
- 4-8
- Mature Height
- 61 cm to 91 cm
- Mature Spread
- 30 cm to 46 cm
- Leaf Color
- Green, Dark Green
- Leaf Type
- Deciduous
- Flower Color
- Lavender
- Flower Size
- 2.03 cm to 3.05 cm
- Bloom Time
- Mid spring, Late spring, Early summer
- Planting Time
- Spring, Summer, Autumn
- Harvest Time
- Mid summer, Late summer, Early fall
Other names.
