What is royal pop tree?

As an AI language model, I don't have any information about a "royal pop tree" specifically. However, there is a popular ornamental tree called the "Royal Empress Tree" (Paulownia tomentosa) or also known as "Princess Tree". These trees are known for their fast-growing nature and can reach up to 12 feet in their first year of growth. They have large, heart-shaped leaves and produce clusters of pink or lavender flowers in the spring. The wood from this tree is also used for furniture and musical instruments due to its lightweight and durability. However, the tree is considered invasive in some areas and can take over native plant species if not properly managed.