Some "Cryptocoryne" are popular commercially cultivated aquarium plants. Submerged plants reproduce vegetatively, emerse plants may flower and reproduce sexually. Many species are cultivated only by dedicated experts and are very hard to grow, or are not present in a culture at all. Some species are endangered because their natural habitats are disappearing. On the other hand, some water trumpets (e.g. "Cryptocoryne beckettii") are very hardy aquarium plants, easy to grow to the point that they have become an invasive species after being introduced in Florida in North America.