This old fashioned plant is growing in the neighbour's yard. It's called a Rosella and is much sought after by some people to make jam using the red pods you can see here. The resulting spread is a glorious dark red colour which also has quite a tart flavour. I've been promised a bottle when the neighbour makes it and will let you know if it tastes as delicious as I remember. The flower is quite pretty too and you can see that they're in the hibiscus family.