Phoenix One® Royal Empress Tree

Phoenix One® is a fast-growing Paulownia hybrid developed from Paulownia elongata and Paulownia fortunei. WeGrow describes it as having thick, fleshy leaves, a compact crown and tolerance of exposed, windy sites; its cited frost limit depends on age, cultivation and weather rather than corresponding to a USDA zone. ### Site and growth The [WeGrow variety page](https://wegrow-croptec.com/en/order-kiri-trees/kiri-varieties/) gives the selection’s parentage and growth characteristics. The [nursery profile](https://www.brighterblooms.com/products/phoenix-one-royal-empress-tree) lists USDA Zones 7–11, full sun to partial shade and mature size of about 40–50 ft tall by 30–40 ft wide. Allow ample room for the crown and keep it clear of buildings and overhead utilities. ### Establishment Choose a sunny site with well-drained soil. Water deeply while the tree establishes and during extended dry spells, then adjust to rainfall and soil moisture. The developer describes the hybrid as suitable for exposed sites, but young trees still benefit from protection while establishing. ## Maintenance Check structure periodically and remove damaged or crossing branches with clean cuts. Keep the planting area clear enough to monitor growth and maintain access around the mature tree.