(Empress tree, Foxglove tree, Princess tree, Royal pawlonia)
This deciduous tree has thick shoots and large, lobed, bright green leaves. Fragrant pinkish lilac flowers appear in late spring with the foliage. When grown as a perennial, its robust shoots become sturdy stems 2 inches in diameter, with mammoth leaves as much as 2 feet across. Paulownia tomentosa can grow to 12 feet tall in a single season.