I’m embarrassed to admit I have killed 5 mango trees either bought from known online nurseries or local nursery like Champa. As luvfig said most of these are likely from Florida which will thrive for 2 to 3 years then die. I did everything according to the growing mangos in ca thread, not letting it fruit, afternoon shade, winter protect, etc. Mine property has sandy soil. I have avacado, citrus, anonna trees fruiting and growing well. I just purchased 5 turpentine seeds and buried them in the ground 18 inches. I’m impatient and wants some home grown mangos while i still have teeth.