Cas Guava Tree, Costa Rican Guava (Psidium friedrichsthalianum)Tangy Tropical Delight from Costa Rica Common Names: Cas Guava Tree, Costa Rican Guava Tree, Sour Guava Tree, Cas Tree Family: Myrtaceae Origin: Central America, particularly Costa Rica Cas Guava Tree (Psidium friedrichsthalianum), also known as Costa Rican Guava, is a small tropical fruit tree known for its unique and intensely tangy fruit. Native to Central America, particularly Costa Rica, Cas Guava is a popular fruit in tropical regions, often