Containing Ostrich ferns?
Hi! I'm thinking of planting a big long row of ostrich ferns along my foundation and along an ugly chainlink fence in a shady, moist part of the yard. I will eventually want to plant perennials in front of the row along the fence, and lawn outside of that. However, I hear Ostrich ferns are quite invasive via underground runners.
WOuld it be possible to prevent them from spreading outside where I want them by sinking a board or other kind of barrier in front of the row? If so, how deep would it need to go to be effective? Also, I suspect I should put a barrier by the chain link fence so my neighbor's lawn doesnt get eaten by the ferns.