[Arid_gardener] Question from Home-Hort WWW page

[beverlybonich at cox.net]

85395
beverlybonich at cox.net

My lemon tree (don't know what kind--it was here when I moved in) has leaves on the exterior of the canopy that are drooping. The leaves in the interior are fine. It is 10 years old.  The orange, grapefruit and tangelo trees are fine.  I water every 5 days, 2 gal. heads, 4 hours, at the dripline and deepwater (flood) once a month.  The last flood was 10/1/2007. Thank you for any help you can give me.