Yellow Flag Iris, Iris Pseudocorus, is one of surprisingly few native pond Irises. Yellow Flag makes its home in damp clay and loamy soils of wetlands and marshes. It thrives in the Fenland habitat of the Norfolk Broads and is widespread across the county.
Also known as "Daggers" Yellow Flag Iris is a vibrant, beautiful native example of the Iris wildflower family. Sadly this species tends to gets overlooked by mainstream garden centres in favour of more popular blue-coloured Irises, which are actually Asian in origin and not native to the UK.
With a little care Yellow Flag Iris can be a wonderful addition to most wildlife garden ponds. In particularly favourable conditions the Yellow Flag Iris will thrive and can become a little over vigorous, so growing it in containers is a good idea to avoid it taking off too dramatically, especially if you have a smaller ponds or bog gardens.
Fortunately my pond margin has plenty of room and mixed companion planting is providing competition from other marginal plants such as Purple Loosestrife, Meadowsweet, Water mint, Reedmace (Typha), true Bulrush (Scirpus Lacustris) to name but a few. So far this approach seems to have kept the pond margin mix nicely balanced.