I have never grown guava from seed......However, from my notes given in the Sub Tropical Fruit class I took years ago, we were told that the time from seed planting until first fruit is 1-3 years. So, yours is on the more precocious side of the average. It is also far less seedy than the average (I know I am not telling you anything new with this). My notes indicate that the average quava has between 100 and 500 seeds. That's what I didn't like about the fruit. I was able to get an Indonesian White Seedless variety years ago from Hopkins Tropical Fruit Nursery. However, like all of the guavas that I once had, they eventually went into decline and died. Here in Florida, I don't think these trees have a long life....or maybe they just didn't like my yard with its periodic flooding and mucky soil.

I got seeds of egyptian white Guava a year ago. I planted the seeds and sprouted. they're about 2 ft tall, I gave one to a relative who lives in Antigua the Caribbean island and it flowered and has a couple fruit already. What I'm trying to say is Guava is a very fast grower, and if the conditions are ideal it will flower early in age.

Bass

Yeah, I have seen many seedling guavas produce fruit in around 3 years of age, but never in 13 months... I guess it is somewhat common though. At any rate, my climate in z9a is not really too ideal, but it managed to flower anyway...

hmhausman, my father lives in Miami and he has a sister seedling of my guava plant (same age) and it is 1/8 the size of mine. It was planted in pure south florida rocky soil though. He just dug it out of the ground (after seeing pictures of mine) and put it in a pot and it is doing much better already. They also don't like soils that remain saturated with water for extended periods, so that could have been your problem. Of course, you already know that...

Good luck to everyone with their tropicals, my lowest temp so far was 39F, a lot of rain though!