The guava (Psidium guajava) flower can be self-pollinated and produce fruit (about 15.9% set), but cross-pollinating increased fruit production up to 39.5%. If you have a home garden, it isn't important to have another tree, but when considering a commercial production, it is imperative that there be different cultivars to assure cross-pollination and increased fruit production.
Guava
no, there is not
Guava leave extract can be used for guava soap. To make this cleanser, the leaves need to be boiled to form an extract used in the soap making process.
Yes, plums need the correct pollinator. The right one depends on which variety you have.
In subtropical climate
In short, they do. Greenhouses are not usually sealed, and insects can get in and out, and they will pollinate the flowers.
Guava guava belly!
Bees pollinate the flowers.
Victoria plums are self fertile so do not require another plum tree to pollinate them.
Pollen.
The word guava is a noun. A guava is a yellow tropical fruit.
Guava leaf is renowned as a treatment for diarrhea. Usually the leaves are boiled in water and then the water is consumed by the patient as a beverage, but chewing the leaves is another method of taking guava for diarrhea and is said to be just as effective.