桦（hua）
Name meaning
桦 (hua) names the birch tree: pale bark, northern forests and resilient clean growth. In names it should feel natural and crisp rather than ornamental.
Practical naming use
桦 (hua) is a nature character with a clean northern feeling. It suggests birch bark, upright trunks, cold air and resilient growth. It is less common than 华 (Hua), which can be an advantage for users who want the hua sound without the duplicate-heavy splendor of 华 (Hua). It works best when kept botanical and textural rather than inflated into a grand historical claim.
Pair 桦 (hua) with clarity, peace or elegance: 桦清 (Huaqing), 桦宁 (Huaning), 桦雅 (Huaya) or 桦文 (Huawen). Avoid another tree character unless the name is intentionally forest-like.
桦清 (Huaqing): Hua contributes birch tree; Qing adds clear, pure.
Reference
Modern botanical usage
Historical / name-use references
桦山资纪 (Kabayama Sukenori)
桦山资纪 (hua shan zi ji) Kabayama Sukenori was a historical political and military figure who died in 1922. His name directly contains 桦 (hua), though the positive naming reading should come from birch imagery rather than his politics.