What is this?? Plz help

darkdestruction420 said:

it should. it blocks off oxygen to inside the stem therefor denying the worm oxygen so it has to leave or die.

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yeah, that's what i said, that I stuck a little stick in the hole on mine (either imprison it to die or it was already gone) and that was 2 months ago and plant is very nice now!

ya man cut the bore worm out. You should be able to trace where it is at.

well later in the day i did another inspection and could not see anymore of the spots,but i will still be on the lookout. The spot that was telling about these european borers said to wash the bottom of the leaves so i did that . I think that if i do see anymore ill try the vaseline. thanks for all responses. Very helpfull.