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Description
Penstemon Davidsonii is a perennial herbaceous plant that belongs to the family Plantaginaceae. This plant is native to North America, specifically in California and Nevada, growing in dry to moist habitats such as mountain meadows, forests, and rocky slopes. It can grow up to 3 feet tall and 2 feet wide, with a bushy appearance and a deep root system that allows it to withstand dry conditions.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Lamiales |
| Family | Plantaginaceae |
| Genus | Penstemon |
Appearance
The Penstemon Davidsonii has lance-shaped leaves that are green on top and grayish underneath. The leaves are arranged in a spiral pattern along the stems, which are square in shape and covered in fine hairs. The flowers are tubular in shape, growing in clusters at the end of the stems. The flowers vary in color from light to dark pink, with a white throat that has fine purple lines. The blooming period is from May to July.
Care Guide
The Penstemon Davidsonii requires well-draining soil and full sun exposure but can tolerate partial shade. It is drought-tolerant, but regular watering is recommended during the growing season. Fertilization is not necessary, but a light application of a balanced fertilizer in the spring can promote growth. This plant prefers a pH range of 6.0 to 8.0. It is hardy in USDA zones 5 to 9.
Common Pests & Diseases
The Penstemon Davidsonii is generally pest and disease-free. However, it can be affected by spider mites, thrips, and powdery mildew. These problems can be treated with insecticidal soap or neem oil.
Habitat
The Penstemon Davidsonii is native to North America, specifically in California and Nevada. It can grow in a variety of habitats, including mountain meadows, rocky slopes, and forests. It is adapted to dry to moist conditions and is often found in areas with well-draining soil.
Question and Answer
Q: Is Penstemon Davidsonii a drought-resistant plant?
A: Yes, Penstemon Davidsonii is drought-resistant, but regular watering is recommended during the growing season.
Q: Does Penstemon Davidsonii require fertilizer?
A: Fertilization is not necessary, but a light application of a balanced fertilizer in the spring can promote growth.
Q: What kind of pests can affect Penstemon Davidsonii?
A: Penstemon Davidsonii can be affected by spider mites, thrips, and powdery mildew.
Q: What is the blooming period of Penstemon Davidsonii?
A: The blooming period of Penstemon Davidsonii is from May to July.
Related Plants
- Penstemon Barbatus
- Penstemon Grandiflorus
- Penstemon Hartwegii
- Penstemon Hirsutus
References
- “Penstemon Davidsonii.” Lady Bird Johnson Wildflower Center. Accessed 14 Sept. 2021. <https://www.wildflower.org/plants/result.php?id_plant=PEDA5>.
- “Penstemon Davidsonii.” San Francisco Botanical Garden. Accessed 14 Sept. 2021. <https://www.sfbotanicalgarden.org/garden/bloom_09_06_penstemon_davidsonii.shtml>.
- “Penstemon Davidsonii.” Pacific Horticulture Society. Accessed 14 Sept. 2021. <https://www.pacifichorticulture.org/articles/penstemon-davidsonii/>.
