What are the best plants to grow in concrete outdoor flower boxes?

Concrete outdoor flower boxes are a stylish and durable choice for urban gardening, but they can pose challenges like poor drainage and heat retention. The best plants for these conditions are drought-tolerant, low-maintenance, and adaptable to confined spaces. Here are some top picks:

1. Succulents (e.g., Sedum, Echeveria) – Thrive in dry conditions and add texture.

2. Lavender – Loves well-drained soil and full sun, perfect for concrete planters.

3. Ornamental Grasses (e.g., Blue Fescue) – Hardy and visually striking.

4. Herbs (e.g., Rosemary, Thyme) – Drought-resistant and practical for cooking.

5. Marigolds – Bright, cheerful, and tolerant of tough conditions.

For best results, ensure proper drainage by adding gravel at the base and use a lightweight potting mix. These plants will flourish in concrete flower boxes, bringing life to urban spaces with minimal care.