gardenlen writes:
got a seedling lemon tree 4 years old about 3+ meters high, leaking
sap around some of the base at about 4"s up from the ground, it is in
well drained position mulch not touching the trunk (what mulch that
there is near it another mulching job to do).

any ideas/suggestons please?

On his weekend radio program (2UE, Sat/Sun morning 6-9) Don Burke may
have provided your answer, Len. In answer to a similar question
regarding a red gum, he said that it's a sign of a healthy tree (after
eliminating borers and likely diseases). He said that after a period
of rapid growth it is not unusual for the trunk to split and the
emergence of sap indicates a healthy immune system: the sap protecting
and sealing the split against pests and diseases.

If your seedling lemon is anything like one I grew from seed, you can
see it growing bigger by the minute! Mine became a prolific bearer of
large fragrant fruit, and its branches carried wicked spears to ward off
all but the most determined of thieves.
--
John Savage (my news address is not valid for email)