Two things come to mind, one serious/inspiring and
the second involving a bad pun.
1) Give the Judge, the head of probation, and the
FOOD Share guy, a knife a cutting board, an attractive good sized apple.
Have them cut open the apples. Have the two youths remove the seeds.
Then you and the two youths plant the seeds. Your Master/Mistress of
ceremonies can describe what you are doing and deliver the inspirational
finishing quote (which is a Japanese proverb in case anyone asks):
"You can tell how many seeds there are in an apple,
but you never know how many apples there might be in a seed."
And do practice this as you would be surprised at
how many people who don't cook much don't know how to cut an apple open to get
at the seeds without slicing the seeds.
2) Train the youths to graft fruit trees with the
adults providing physical support and extra hands. Your Master/Mistress of
ceremonies can describe what you are doing and deliver the finishing quote
which is the really bad pun: "And may the only graft that any of you see in the
future be in fruit trees..."
Again, practice helps.
3) If you do wind up repotting a fruit tree, you
can get more visual impact if you choose one that is blooming.
4) And if the golf course is open to healthy stuff
in general, you might point them toward a golf course that has been designed to
be ecologically healthy, low maintenance, and beautiful as adopting some of the
strategies can help other golf courses.