I'm not so sure about the muggle equivalent to Herbology being Biology. I feel like it would be more easily & appropriately related to something a bit more specifically plant based- Environmental Science or something similar
Stick Raft Building STEM Project. Can you build a raft that really floats? How much weight can your stick raft carry? Can your raft cope in a real stream? This STEM challenge is great fun for kids and a super way to get them stretching and developing their skills and engaging with Nature.