English: Dense Butterfly Bush, Japanese Butterfly Bush
Japanese: ヤマハナズオウ (Yamahanazuou)
Description: Buddleja japonica Hemsl., commonly known as Dense Butterfly Bush, is a deciduous shrub that typically grows to a height of 1 to 2 meters. It is characterized by its dense clusters of fragrant, tubular flowers and lance-shaped green leaves. The flowers, which bloom in summer, are typically purple or lavender in color, attracting butterflies and other pollinators. The shrub has an overall bushy and compact growth habit, making it suitable for borders, hedges, and mixed shrub plantings.
Known Range: Buddleja japonica is native to Japan and can be found growing in various regions across the country, particularly in mountainous areas and along forest edges. It has also been introduced to other parts of the world as an ornamental plant.
Care Requirements:
Sunlight: Buddleja japonica thrives in full sunlight but can tolerate partial shade.
Soil: Well-drained soil with moderate fertility is ideal for this plant. It can tolerate a range of soil types but prefers slightly acidic to neutral soil pH.
Watering: While established plants are moderately drought-tolerant, regular watering is essential, especially during dry periods, to promote healthy growth and flowering.
Pruning: Pruning in late winter or early spring helps maintain shape and encourages vigorous flowering. Remove dead or damaged branches and trim back overgrown stems to promote new growth.
Fertilization: Apply a balanced fertilizer in spring to support healthy growth and flowering.
Pests and Diseases: Buddleja japonica is relatively pest and disease resistant but may occasionally be susceptible to aphids, spider mites, and powdery mildew. Monitor regularly and treat as necessary with appropriate insecticides or fungicides.
Note: Always refer to local gardening guidelines and recommendations for specific care instructions tailored to your region’s climate and conditions.
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!
