Arenaria montana ‘Summer Lemon’ (often known as Montane Sandwort ‘Summer Lemon’) is a low-growing, evergreen groundcover with a soft mat of greenish-grey foliage and clusters of soft lemon yellow flowers that bloom from spring through summer. It is a hardy, drought-tolerant perennial that thrives in full sun and well-drained soil, making it ideal for rock gardens, borders, or cascading over walls and pots.