A small tree to 33 ft (10 in) high, with spreading branches, the guava is easy to recognize because of its smooth, thin, copper-colored bark that flakes off, showing the greenish layer beneath, and also because of the attractive, “bony” aspect of its trunk which may in time attain a diameter of 10 in (25 cm).
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Growing Guava from Seed Growing guava from seed may not produce a fruiting tree for up to eight years and the plants are not true to the parent. Therefore, cuttings and layering are more often used as propagation methods for guava fruit trees. Growing guava seeds, however, is a fun project and produces an interesting plant.
You need to harvest seed from a fresh guava and soak off the flesh. The seeds can remain usable for months, but germination can take up to eight weeks. Boil the seeds for five minutes prior to planting to soften the tough outside and encourage germination.
Caring for a Guava Tree If you are lucky enough to live in a region where guava plants grow outside, the tree should be planted in well-drained soil where its roots have room to spread.
Fertilize growing guavas every one to two months while young and then three to four times per year as the tree matures.
Guava trees need a high amount of nitrogen, phosphoric acid and potash, along with some magnesium for maximum fruit production.
Water frequently after planting and then keep mature trees moderately moist during the blooming and fruiting seasons. Once established, caring for a guava fruit tree is similar to any fruiting tree care.