When it comes to filling outdoor plant boxes with lush, low-maintenance greenery, selecting the right ground cover plants is key. These plants not only add visual appeal but also help suppress weeds and retain soil moisture. Here are some of the best options for ground covers in outdoor plant boxes:

1. Creeping Thyme: This aromatic herb forms a dense mat of tiny leaves and produces delicate purple flowers. It’s drought-tolerant and thrives in full sun, making it perfect for sunny planters.

2. Sedum (Stonecrop): With its succulent leaves and vibrant blooms, sedum is a hardy choice for plant boxes. It requires minimal water and comes in varieties like ‘Angelina’ for golden foliage or ‘Dragon’s Blood’ for red accents.

3. Ajuga (Bugleweed): Known for its striking purple or variegated leaves, ajuga spreads quickly and thrives in partial shade. It’s ideal for adding color to shaded areas.

4. Irish Moss: This soft, cushion-like plant creates a velvety green carpet and thrives in moist, shady conditions. It’s perfect for adding texture to your plant boxes.

5. Dichondra ‘Silver Falls’: With its cascading silver-green leaves, this trailing plant adds a unique touch to elevated planters. It’s drought-resistant and loves full sun.

For best results, choose plants that match your climate and light conditions. Mixing textures and colors can create a stunning, layered effect in your outdoor plant boxes. Happy gardening!