Contents
Description
Lupinus angustiflorus, commonly known as narrow-leaved lupine, is a perennial herbaceous plant that belongs to the family Fabaceae. It is native to Western North America, particularly in California and Oregon. It is a popular garden plant that produces vibrant blue, purple, pink, or white flowers in spring or early summer. It grows up to two feet tall and has narrow leaves that are around 1-2 inches long. The plant has a deep taproot system that helps it survive in dry and rocky soils.
Taxonomic Information
| Domain | Eukarya |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Fabales |
| Family | Fabaceae |
| Genus | Lupinus |
Appearance
Lupinus angustiflorus is a beautiful plant that can add a splash of color to any garden. It has tall, slender stems that can reach up to two feet in height. The leaves are narrow and elongated, with a length of around 1-2 inches. The flowers are arranged in a dense spike and are typically blue, purple, pink, or white in color. They have a distinctive pea-like shape and are around 1 inch long. The plant produces a seedpod that contains several seeds.
Care Guide
Lupinus angustiflorus is a relatively easy plant to care for, and it can thrive in a variety of conditions. Here are some tips to keep your plant healthy:
- Water: Lupinus angustiflorus prefers well-draining soil that is moist but not waterlogged. Water the plant regularly during the growing season, and reduce watering in the winter.
- Fertilization: The plant does not require fertilizer, but you can add a slow-release fertilizer once a year to promote growth.
- Soil: The plant prefers well-draining soil that is slightly acidic. You can add compost or organic matter to improve soil quality.
- Sunlight: Lupinus angustiflorus prefers full sun but can tolerate partial shade.
- Hardiness Zones: The plant is hardy in USDA zones 7-10.
Common Pests & Diseases
Lupinus angustiflorus is generally resistant to pests and diseases. However, it can be susceptible to root rot if the soil is too wet. Aphids and spider mites can also infest the plant, but they can be controlled with insecticidal soap or neem oil. Powdery mildew can also affect the plant, but it can be controlled with a fungicide.
Habitat
Lupinus angustiflorus is native to Western North America, particularly in California and Oregon. It grows in a variety of habitats, including dry rocky slopes, meadows, and woodland areas. It is a hardy plant that can tolerate drought and poor soil conditions.
Question and Answer
Q: Is Lupinus angustiflorus toxic to pets?
A: Yes, Lupinus angustiflorus is toxic to pets if ingested. It contains alkaloids that can cause vomiting, diarrhea, and other symptoms.
Q: Can Lupinus angustiflorus be grown in containers?
A: Yes, Lupinus angustiflorus can be grown in containers as long as they have good drainage and are placed in a sunny location.
Q: How often should Lupinus angustiflorus be pruned?
A: Lupinus angustiflorus does not require regular pruning. You can remove any dead or diseased branches as needed.
Q: How long does Lupinus angustiflorus bloom?
A: Lupinus angustiflorus typically blooms in spring or early summer and can continue to bloom for several weeks.
Related Plants
- Lupinus arboreus
- Lupinus polyphyllus
- Lupinus nanus
- Lupinus chamissonis
References
- “Lupinus angustiflorus.” Calflora. https://www.calflora.org/app/taxon?crn=3743
- “Lupinus angustifolius.” USDA Plants Database. https://plants.usda.gov/core/profile?symbol=LUAN4
- “Lupinus angustiflorus.” Lady Bird Johnson Wildflower Center. https://www.wildflower.org/plants/result.php?id_plant=luan4
