overwater? a change in temps?

Make sure the guava tree is watered well although the tree is always going to drop some fruit.

huh? Mine doesn't like a lot of water. racor, maybe yours has extreme drainage? In triple degree temps I wait till it's almost ready to wilt.

mature guava trees can withstand drought, both bad drainage or extreme drainage, lots of heat (140+), 100% heavy clay, etc. (At least they do great either seeded or seedless guava fruit trees in here with those kind of factors).

Perhaps it is a young tree (cold?)...or I have no idea.

Heathen1 and Patusho25

I do have a fast draining soil and with this heat here in South Cal. I have to water every 2 days. My trees are young and not well established as Patush has mentioned.