Thanks Kevin, this summer if I notice the chlorosis again I'll try a shot of
Epson salts. I use Peters 20-20-20 fertilizer, which is supposed to supply
micro nutrients, but maybe some of the trees aren't getting all they need.

Regards,
Roger Snipes Spokane, WA Zone 5, or maybe Zone 6.
Politics is the art of looking for trouble, finding it, misdiagnosing it,
and then misapplying the wrong remedies. Groucho Marx (1895-1977)

----- Original Message -----
From: "kevin bailey"


Late summer chlorosis has usually indicated a treatable mineral
deficiency in my trees. My English oak often becomes chlorotic in
August/September and is rapidly greened up with a small dose of Epsom
salts (teaspoon to the gallon). In other cases I have successfully used
trace element "frit" at the next repot or watered with fertiliser
containing the full spectrum of plant nutrients.


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