Creating a lush and vibrant cassis garden in outdoor plant boxes requires careful selection of plants that thrive in partial shade and confined spaces. Cassis gardens, known for their rich foliage and subtle beauty, benefit from plants that complement their unique aesthetic while adapting well to container growth.

1. Hostas: These shade-loving perennials are perfect for cassis gardens, offering a variety of leaf colors and textures. They thrive in outdoor plant boxes with well-draining soil and indirect light.

2. Ferns: With their delicate fronds, ferns add a touch of elegance to cassis gardens. Varieties like Japanese painted fern or maidenhair fern are ideal for plant boxes, preferring moist, shaded conditions.

3. Heuchera (Coral Bells): Known for their striking foliage in shades of purple, green, and silver, Heuchera plants are excellent for adding color contrast to cassis gardens. They tolerate partial shade and require minimal maintenance.

4. Astilbe: These feathery, plume-like flowers bring softness and height to cassis gardens. Astilbe thrives in shady spots and moist soil, making it a great choice for outdoor plant boxes.

5. Brunnera (Siberian Bugloss): With heart-shaped leaves and tiny blue flowers, Brunnera adds charm to cassis gardens. It’s a low-maintenance plant that flourishes in shade and cool climates.

For optimal growth, ensure your outdoor plant boxes have proper drainage and are filled with nutrient-rich soil. Regular watering and occasional fertilization will keep your cassis garden thriving. By selecting the right plants, you can transform your outdoor plant boxes into a stunning cassis garden oasis.