My advice to the establishment who, despite tongue-in-cheek assurances to the contrary, can't wait to be rid of us? Live with it. A temporary loss of face and a bit of patience is cheaper than fighting a case for constructive dismissal, and very much cheaper than losing one (or fifty)
Gardens by their very nature are provisional, ephemeral almost. They change from season to season and from year to year, they fall into decay and are restored. Sometimes they disappear altogether and are reclaimed by the wildness of the surrounding woodland, and spectacular new gardens are made in what was previously a patch of wilderness. That's a strangely comforting thought.