Sophora microphylla 'Sun King' is a distinctive evergreen plant grown primarily for its luminous yellow foliage and elegant branching habit. Its fine, small leaves are carried on slender stems, creating a soft, open silhouette that brings light and contrast to the garden. The plant naturally forms a tidy, upright shape and develops slowly, making it easy to place without frequent pruning. Best suited to a sunny, sheltered position, it copes well with dry conditions once established and performs particularly well as a standalone feature, in containers, or within modern planting schemes where foliage colour and structure are more important than flowers.