Any ideas that excited kids about gardening are great,
In my classroom I grow TickleMe Plants. The magical pet like plant that MOVES when you Tickle It. The TickleMe Plant is a very entertaining plant that closes its leaves when tickled. I am sure it is making the kids more excited about gardening and nature.
They can't wait to come to class to take care of their pet TickleMe plant and to interact with them. See video This is real.