Gardening in clay soil can be challenging, but with the right plant choices, your outdoor plant boxes can flourish. Clay soil retains moisture and nutrients well but can be dense and slow-draining. Here are some of the best plants that thrive in clay soil:

1. Daylilies (Hemerocallis) – These hardy perennials adapt well to clay soil and produce vibrant blooms throughout summer.

2. Hostas – Known for their lush foliage, hostas thrive in clay and are perfect for shaded or partially shaded plant boxes.

3. Black-Eyed Susans (Rudbeckia) – These drought-tolerant flowers add bright yellow hues and attract pollinators.

4. Sedum (Stonecrop) – A low-maintenance succulent that handles clay soil’s moisture while adding texture to your garden.

5. Russian Sage (Perovskia atriplicifolia) – This aromatic, drought-resistant plant thrives in clay and adds height to plant boxes.

For best results, amend clay soil with compost to improve drainage before planting. Choose plants with strong root systems to break up dense soil over time. With these selections, your outdoor plant boxes will thrive even in tough clay conditions!