Oak ridge lupine (Lupinus diffusus)

Oak ridge lupine

It is a perennial herbaceous plant growing to 30 to 50 cm tall. The leaves are palmately compound with 3-5 leaflets 6 to 12 cm long and 3 to 5 cm broad, gray-green to silvery green, covered with fine white hairs. The flowers are pale blue or violet, produced in a dense spike 15 to 30 cm long.

Scientific classification

Species

Oak ridge lupine (Lupinus diffusus)

Legumes, milkworts and allies

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Perennial

Lifespan

Herb, Shrub

Plant Type

Spring, Summer, Late winter

Bloom Time

46 cm to 91 cm

Plant Height

60 cm to 90 cm

Spread

Green, Blue, White, Gray, Silver

Leaf Color

Spring, Summer

Growth Season

Moderate

Growth Rate

Images of Oak ridge lupine

Quickly Identify Oak ridge lupine

Sky-blue pea-like flowers with white spots on upper petal.

Palmately compound leaves with silvery appearance due to white hairs.

Flattened tan to brown pods, 2 to 3 inches (5 to 7.5 cm) in length.

Distinctive radiating leaflets, each 1.5 to 4 inches (4 to 10 cm) in length.

Blooms on dense spikes, measuring 0.5 to 1 inch (1.3 to 2.5 cm) in length.

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Care Guide for Oak ridge lupine

Every week

Water

Full sun

Sunlight

20 - 38 ℃

Ideal Temperature

Water: Originating from sandy habitats, oak ridge lupine thrives with moderate moisture and prefers a balance between hydration and drought tolerance. Watering weekly ensures optimal growth. Commonly found outdoors, oak ridge lupine benefits from natural rainfall and adapts well to seasonal water availability.

Fertilize: Oak ridge lupine requires balanced nutrition fertilizers for optimal growth, fertilizing monthly during the growing season at half strength. Avoid feeding during dormancy and use milder solutions for young plants. Always water the soil prior to fertilization to prevent root burn and maximize nutrient absorption.

Pruning: Oak ridge lupine showcases vibrant blue to purple flowers and thrives with early to late spring pruning. Trim dead stems and spent flowers to support health, promote blooming, and prevent pests. Adhering to this schedule aligns with oak ridge lupine's growth cycle for optimal recovery and flowering.

Propagation: Oak ridge lupine is best propagated by sowing in high-quality, well-draining soil. Pre-soak seeds to enhance germination, then plant at a shallow depth. Maintain even moisture without waterlogging, and ensure ample sunlight for growth. Handle seedlings gently to prevent damage.

Repotting: Repot oak ridge lupine every 2-3 years in early spring before growth peaks. Use a wide, shallow container for the root system. After repotting, provide well-draining soil and moderate watering to support recovery, making the process rewarding.

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