Guava plants are known for their edible fruit, but they also have other useful parts that can be harvested and used for various purposes. Here are some of the parts and their uses:

1. Fruit: The fruit of the guava plant is the most well-known part and is eaten fresh, used in cooking and in the production of juice and jams. Guava is a good source of vitamins A and C, fiber, and antioxidants.

2. Leaves: Guava leaves are commonly used in traditional medicine to treat various ailments such as diarrhea, fever, and skin disorders. The leaves are also used to make tea, which has a pleasant aroma and is believed to have several health benefits.