I've heard from many people that dogs can have an allergic reaction to wandering trad, and it's possible Penny does, but I've never been sure. (She does have frequent skin issues.)
I don't usually mind seeing non-native plants around the place, because it seems to me it's inevitable that garden escapees will grow amongst our indigenous plants, but I must say I hate to see this plant, because it seems to have no natural enemies in Australia and smothers every other plant. Here's a photo of it that I wrote about in a previous post, on a day when I walked past literally kilometres of nothing but trad, with only trees able to resist its smothering embrace.
But how lovely to see the native grasses given a chance to succeed against it, with the help of the wonderful volunteers who put so much effort into maintaining Wilson Reserve.