Lupinus Havardii

Description

Lupinus Havardii is a perennial plant that is native to Arizona, New Mexico, and Texas. It is a member of the Fabaceae family, which is known for its pea-like flowers and nitrogen-fixing abilities. This plant is also commonly known as Havard’s Lupine, and is named after botanist T.D.A. Cockerell’s mentor, William Havard.

Taxonomic Information

Appearance

Lupinus Havardii can grow up to 2 feet tall and 1 foot wide. It has green, palmate leaves that are divided into 7 to 11 leaflets. The flowers are typically blue or purple, and are arranged in a spike-like inflorescence. The plant blooms in the spring and summer months, and the flowers are followed by seed pods that are covered in soft hairs.

Care Guide

Water: Lupinus Havardii prefers well-draining soil and moderate watering. It is important not to overwater the plant, as this can lead to root rot.

Fertilization: This plant does not require frequent fertilization. A slow-release fertilizer can be applied in the spring if desired.

Soil: Lupinus Havardii prefers well-draining soil that is slightly acidic. The soil should be amended with organic matter before planting.

Sunlight: This plant prefers full sun but can tolerate partial shade.

Hardiness Zones: Lupinus Havardii can be grown in USDA hardiness zones 6-10.

Common Pests & Diseases

Lupinus Havardii is generally a hardy plant with few pest or disease problems. However, it can be susceptible to aphids, spider mites, and powdery mildew. These can be controlled with insecticidal soap or neem oil.

Habitat

Lupinus Havardii is native to the southwestern United States and is commonly found in desert washes, canyons, and rocky slopes. It prefers well-draining, sandy soil and can tolerate drought conditions.

Question and Answer

Q: How often should I water my Lupinus Havardii?

A: Lupinus Havardii prefers moderate watering and well-draining soil. Watering once a week is typically sufficient, but this may vary depending on the climate and soil conditions.

Q: Can Lupinus Havardii be grown in containers?

A: Yes, Lupinus Havardii can be grown in containers as long as the container is large enough to accommodate the plant’s root system and the soil is well-draining.

Q: When should I prune my Lupinus Havardii?

A: Lupinus Havardii does not require frequent pruning. However, deadheading the spent flowers can encourage more blooms and prevent self-seeding.

Q: Can Lupinus Havardii tolerate cold temperatures?

A: Lupinus Havardii can tolerate temperatures down to 0°F, but it is best to protect the plant from extreme cold with a layer of mulch or frost cloth.

Related Plants

• Lupinus texensis
• Lupinus perennis
• Lupinus argenteus
• Lupinus albicaulis

References

• “Lupinus havardii.” Arizona State University. Accessed July 14, 2021. https://cals.arizona.edu/yavapaiplants/SpeciesDetailForb.php?genus=Lupinus&species=havardii.
• “Lupinus havardii.” Lady Bird Johnson Wildflower Center. Accessed July 14, 2021. https://www.wildflower.org/plants/result.php?id_plant=LUHA.
• “Lupinus havardii.” Missouri Botanical Garden. Accessed July 14, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=242229&isprofile=0.