You can only cast Second Spring on an elder plant, and Pixies leave when plants turn elder. So I would say what you're proposing can't be done.
Thanks for the response. I don't have a high enough gardening level to use Second Spring yet so I was just trying to plan ahead. It's too bad it won't work but I guess it makes sense because it would be a "too easy" way to make a permanent "like" for your garden.