Gardening in alkaline soil can be challenging, but choosing the right plants ensures a lush and vibrant outdoor plant box. Alkaline soil, with a pH above 7, limits nutrient availability, but several plants thrive in these conditions.

Top Picks for Alkaline Soil:

1. Lavender – Drought-tolerant and fragrant, lavender loves well-drained alkaline soil and full sun.

2. Yarrow – Hardy and colorful, yarrow adapts well to high-pH soils and attracts pollinators.

3. Russian Sage – With silvery foliage and purple blooms, this perennial thrives in alkaline conditions.

4. Boxwood – Ideal for structured plant boxes, boxwood tolerates alkaline soil and requires minimal care.

5. Sedum – Succulent varieties like 'Autumn Joy' flourish in alkaline soil with little maintenance.

Tips for Success:

- Amend soil with organic matter to improve nutrient uptake.

- Ensure proper drainage to prevent root rot.

- Test soil pH regularly to monitor conditions.

By selecting these resilient plants, your outdoor plant boxes will thrive even in alkaline soil, creating a stunning and low-maintenance garden display.