In the herbology level where you have to acquire the Gillyweed, there are a lot of big Tri-Wizard shields that I can never figure out how to get! The first one is where you first find the Spellbook. If you look on the side of the castle, there is a vine which implies that you must cast the Herbivicus spell to walk down it to retrieve the shield, but it its blocked. Is there another way around it or do you have to smash the wall? Also, after defeating the Skrewts after getting out of the first greenhouse, there is a scaffolding above the first flight of stairs that has a vine that you must walk across too. And, lastly, the Bubertubers aren't there at the begining or anywhere else that they could be used to remove the mushrooms to get the shield. I gave up for a while after dying in the last greenhouse with the winding staircase, and I think you might have to get the Gillyweed first before anything else becomes easier. I haven't played this game in almost 2 years and I completely forget all the cheats and hints I knew! Thanks.