Lupinus Albifrons

Description

The Lupinus Albifrons, commonly known as the Silver Bush Lupine, is a perennial plant that belongs to the Fabaceae family. It is native to California and can be found in the coastal ranges from Mendocino County to San Diego County. This plant is known for its beautiful, silver-green foliage and vibrant purple-blue flowers that bloom in the spring and summer months. It can grow up to 3 feet tall and 5 feet wide, making it a great choice for borders, rock gardens, and containers.

Taxonomic Information

Appearance

The Silver Bush Lupine has silvery-green leaves that are palmately compound and measure up to 6 inches long. The leaves are densely hairy and have a soft texture. The plant produces tall, upright stalks that can grow up to 3 feet tall and are covered in dense clusters of purple-blue flowers. Each flower has a characteristic pea-like shape and measures up to 1 inch long. The flowers bloom from April to July and are followed by seed pods that can be harvested and used for propagation.

Care Guide

The Silver Bush Lupine is a relatively easy plant to care for and can tolerate a range of growing conditions. Here are some tips for caring for this plant:

Water

The plant needs regular watering, especially during the growing season. It prefers well-draining soil that doesn’t stay too wet.

Fertilization

The plant benefits from regular fertilization with a balanced fertilizer. Apply the fertilizer in the spring and summer months to promote healthy growth and flowering.

Soil

The Silver Bush Lupine prefers well-draining soil that is rich in organic matter. It can tolerate a range of soil types, but it does best in sandy or loamy soils.

Sunlight

The plant prefers full sun exposure and can tolerate partial shade. It needs at least 6 hours of sunlight per day to thrive.

Hardiness Zones

The Silver Bush Lupine is hardy in USDA zones 8-10. It can tolerate temperatures down to 10°F but may need protection during cold snaps.

Common Pests & Diseases

The Silver Bush Lupine is generally free of major pest and disease problems. However, it may be susceptible to aphids, spider mites, and leafhoppers. These pests can be controlled with insecticidal soap or neem oil. The plant may also be affected by fungal diseases like powdery mildew or rust. These diseases can be prevented by providing good air circulation and avoiding overhead watering.

Habitat

The Silver Bush Lupine is native to California and can be found in a variety of habitats, including coastal scrub, chaparral, and oak woodlands. It is often used in restoration projects to help stabilize hillsides and prevent erosion. The plant is an important food source for several native butterfly and moth species, including the Mission Blue Butterfly.

Question and Answer

Q: What is the best time to plant the Silver Bush Lupine?
A: The best time to plant the Silver Bush Lupine is in the fall or early spring, as this gives the plant time to establish roots before the hot summer months.

Q: Can the Silver Bush Lupine be grown in containers?
A: Yes, the Silver Bush Lupine can be grown in containers, but it needs a large container to accommodate its size.

Q: How often should I fertilize the Silver Bush Lupine?
A: The plant benefits from regular fertilization with a balanced fertilizer. Apply the fertilizer in the spring and summer months to promote healthy growth and flowering.

Q: How do I propagate the Silver Bush Lupine?
A: The Silver Bush Lupine can be propagated by seed or by cuttings. Seeds can be collected from the plant after flowering and sown in the fall or early spring. Cuttings can be taken in the summer months and rooted in a well-draining soil mix.

Related Plants

• Lupinus Arboreus
• Lupinus Nanus
• Lupinus Perennis
• Lupinus Texensis

References

• “Lupinus Albifrons.” Las Pilitas Nursery. Accessed 22 June 2021. https://www.laspilitas.com/nature-of-california/plants/lupinus-albifrons
• “Lupinus Albifrons.” Calflora. Accessed 22 June 2021. https://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Lupinus+albifrons
• “Silver Bush Lupine.” UC Master Gardener Program of Sonoma County. Accessed 22 June 2021. https://sonomamg.ucanr.edu/The_Kitchen_Garden/Plant_of_the_Month/Silver_Bush_Lupine/