Paulownia tomentosa (empress-tree, princess-tree): Go Botany
Empress Lumber - Pacific Coast Teak
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Paulownia Fortunei Seeds Chinese Empress Tree, Royal Paulownia Fast Growing Deciduous Tree Fragrant Attract Pollinators Ornamental Garden Outdoor 1 Oz (Approx 95162 Seeds) by YEGAOL Garden - Walmart.com
Chinese empress tree declared invasive species in Colombia