Description: Sundial Lupine (Lupinus perennis) is a herbaceous perennial plant known for its striking spikes of blue flowers. It typically grows up to 1 to 3 feet tall and spreads about 1 to 2 feet wide. The leaves are palmately compound, consisting of 7 to 11 leaflets, each with a silky texture. The flowers are arranged in tall, dense spikes and bloom from late spring to early summer. The blossoms are typically blue, but can occasionally be found in shades of purple, pink, or white. The plant produces pods containing seeds after flowering.
Known Range: Sundial Lupine is native to eastern North America, ranging from southern Canada to Florida and as far west as Texas. It thrives in open woodlands, prairies, and along roadsides.
Care Requirements:
Light: Sundial Lupine thrives in full sun to partial shade. Ensure it receives at least 6 hours of sunlight per day.
Soil: It prefers well-drained, sandy or loamy soil with a slightly acidic to neutral pH.
Water: While established plants are somewhat drought-tolerant, consistent moisture is beneficial, especially during the flowering season. Water deeply when the soil feels dry to the touch.
Temperature: Sundial Lupine is hardy in USDA zones 3 to 8. It prefers cooler temperatures and may struggle in regions with extreme heat.
Fertilizer: Generally, Sundial Lupine doesn’t require much fertilization if grown in fertile soil. However, a balanced fertilizer applied in spring can encourage robust growth and flowering.
Pruning: Deadhead spent flowers to prolong blooming and prevent self-seeding if desired. Cut back the plant to the ground after flowering to promote new growth and maintain its shape.
Pests and Diseases: Sundial Lupine is relatively resistant to pests and diseases, but it may occasionally suffer from aphid infestations or powdery mildew. Treat any issues promptly with organic or chemical controls as necessary.
Note: While Sundial Lupine is a beautiful addition to gardens, it’s important to note that all parts of the plant are toxic if ingested and may cause discomfort if in contact with the skin. Keep it away from children and pets, and handle with care.
Many of the flowering plants featured on our website are available through Nature Hills Nursery. Ordering them through this link will support the Cernunnos Foundation and your garden!
