Red-veined sorrel is a clump-forming herb. It has a rosette growth pattern, with the leaves emerging from a central point close to the ground.

The most distinctive feature of Rumex sanguineus is its striking leaves. The foliage is smooth and glossy, making the plant visually appealing in the garden.

The plant itself doesn't have a particularly strong odor. The leaves have a mild fragrance when crushed. Red-veined sorrel leaves have a tangy, lemony flavor, similar to other sorrel varieties, with a slightly tart and refreshing taste. The younger leaves are more tender and less bitter than the older ones.