You can easily spend a whole day at Gwelups Secret Garden. / Swamp land and I would recommend doing this before a new housing development comes up. (not confirmed but im sure it will happen) This is a real children’s playground. When I was last there, a few children were making mud pies haha.
I would highly recommend taking a picnic along, finding a nice spot and making a day out of it. This spot is also animal / child friendly so if you have a dog / child bring them along. This spot truly is beautiful and is a photographers dream. You could easily spend the day wondering looking at the beautiful wild flowers, nature and wildlife, you could walk the dog or as I said you could take a picnic and make a day of it.