Lupinus littoralis
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Lupinus littoralis

Seashore lupine

Tier 1 Difficulty: medium Water: low Light: full_sun
Temperature
15–35 °C
Soil pH
6–8
Hardiness
Zone 7–9
Click count
8
Observations
2

Description

Source: leafsnap

Lupinus littoralis is a species of lupine known by the common name seashore lupine. It is native to the coastline of western North America from British Columbia to northern California, where it grows in sandy habitat. It is a low perennial herb or subshrub growing in a clump or mat no more than 30 centimetres (12 in) tall. Each palmate leaf is divided into 5 to 9 leaflets up to 3.5 centimetres (1.4 in) long. The herbage is coated in long, shaggy whitish or silvery hairs. The inflorescence is raceme of whorled flowers each around a centimeter long. The flower is purple in color with a white patch on its banner that fades pinkish. The fruit is a hairy legume pod 3 or 4 centimeters long containing up to 12 seeds. Some Native American tribes ate the roots.

Care Guide

💧 Water

Seashore lupine requires well-drained soil and regular watering. During the growing season, it should receive about 1 inch (2.5 cm) of water each week. If the plant doesn't get enough water, it may go to seed early and produce weak seedlings. On the other hand, too much water can cause root rot and interfere with nitrogen fixation. Achieving the right balance is essential for optimal growth.

☀️ Light Full sun

The perennial plant, Seashore lupine, is a herbaceous species that loves the sun and originates from open habitats. It typically flourishes in open fields such as meadows and grasslands. In terms of sunlight requirements, it prefers full sun exposure but can also withstand conditions with partial sunlight.

Ideal: Full sun
FAQ
What are the sunlight requirements for Seashore lupine (Lupinus littoralis)?

Seashore lupine, also known as Lupinus littoralis, thrives in conditions that provide ample sunlight. It requires 'full sun' which means the plant should receive above 6 hours of sunlight daily. However, it can also tolerate 'partial sun' conditions, meaning it should get about 3-6 hours of sunlight each day. It's important to observe the patterns of sunlight in your garden to ensure you choose a location that offers a good balance of light and shade, catering to the needs of your Seashore lupine for its optimal growth and health.

🌡️ Temperature 15–35°C

Seashore lupine can tolerate a wide range of temperatures, but its distribution may still be restricted by different combinations of moisture and heat. It performs best in warm summer climates with sufficient rainfall or watering. Long periods of cloudy, rainy weather or prolonged high temperatures can raise the chance of Seashore lupine dying. In winter, adequate protection from cold can increase the plant's survival rate.

Ideal temperature: 15–35°C
💨 Humidity
Humidity:
🪴 Soil 6-8
Soil pH: 6-8
🌱 Fertilizer

Seashore lupine typically requires just one dose of fertilizer in the spring, but it can benefit from additional feedings to optimize its growth. The plant should be fed every four to six weeks. Fertilization improves the look and function of the leaves, ensuring a steady color and robust texture. Additionally, it encourages the development of roots and the uptake of nutrients, contributing to the plant's overall wellbeing in the long run.

🪴 Pot & Repot
✂️ Pruning

To promote the health and growth of seashore lupine, it is beneficial to prune the plant in early spring. Begin by removing any dead stems, and then cut back the plant after it has finished blooming to encourage more flowers. This practice helps improve air circulation, reduces the risk of pests, and aligns with the plant's natural growth cycle, enhancing its appearance and vitality.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Herb
Life Cycle
Perennial
Genus
Lupinus
Family
Leguminosae
Hardiness Zone
7-9
Mature Height
20 cm to 40 cm
Mature Spread
30 cm to 61 cm
Leaf Color
Green, Dark Green
Leaf Type
Deciduous
Flower Color
Purple, Blue, White
Flower Size
1.02 cm to 1.52 cm
Bloom Time
Late spring, Early summer, Mid summer
Planting Time
Spring, Summer
Harvest Time
Mid summer, Late summer, Early fall

Tags (6)

Common Names (1)

en Seashore lupine