Good morning all, we are enjoying a 3 day weekend too. Not a memorial event for us, ours is called the "Spring Bank Holiday".
Sorry I didn't make it clear that the picture of pink flowers I took was "Red Campion", a plant that is welcome to grow in our hay meadow, although it generally prefers more shaded places.
I guess you are lucky if you thought it was "Ragwort" as that must mean you don't have it. Although having beautiful bright yellow flowers that are much appreciated by some insects, ragwort (Senecio Jacobea) is a non-native plant that contains toxic alkaloids that persist even when it is baled up in hay or silage. Once eaten the poison accumulates over time in animal livers, often resulting in death to horses and cattle. Deer, goats pigs and chickens are also susceptible. Sheep seem able to tolerate more but they don't thrive afterwards.
Hope the kids have lots of fun in the pool Kyle, I'm sure they will appreciate it all the more for putting some effort into the construction.