Sum and Substance Hosta

Sum and Substance forms a broad, mounded clump of deeply corrugated leaves that shift from green and chartreuse to gold with light exposure. Pale lavender flowers rise above the foliage in summer; published mature-size estimates differ, so allow generous room around the clump. ## Foliage and flowers The [Walters Gardens cultivar profile](https://www.waltersgardens.com/variety.php?ID=HSSAS) lists a 3-foot height, a 5–6-foot spread, USDA zones 3–9, and pale lavender flowers on tall scapes. The [American Hosta Society classification](https://americanhostasociety.org/wp-content/uploads/2023/05/Hosta-Classifications-full-list.pdf) records 18 × 15-inch leaves. The [RHS profile](https://www.rhs.org.uk/plants/85672/hosta-sum-and-substance/details) gives 0.5–1 m for height and spread, while [Hayloft](https://hayloft.co.uk/hosta-sum-and-substance) lists a 90 cm height and spread up to 1.5 m. These are differing estimates, and actual size varies with growing conditions. ## Growing conditions Choose partial shade or filtered light and moist, well-drained soil. Walters Gardens notes that sunnier sites can work with consistent moisture, while RHS recommends partial shade. Clay or loam with an acidic to neutral reaction is suitable. The large foliage makes a strong border or specimen planting, and summer flowers add another seasonal feature. Watch emerging leaves for slug and snail feeding. ## Maintenance Maintain even moisture during active growth, especially in brighter sites. Remove dead foliage after frost or before spring growth. Divide established clumps in early spring when propagation or renewal is wanted, and check young leaves regularly for slug or snail damage.