I have suddenly (we've lived here for 20+ years and I've never seen them before) got some flowers appear down the side of our conservatory. There are about 6 or 7 stems each with a cluster of flower heads. Looking at plantnet they seem to be lilies (lililum bulbiferum - orange lily). I can only think my wife planted them and this is the first time they've appeared - how long can they lay 'dormant' without flowering? The only change to the environment is that a new down pipe was put on that side of the conservatory and it's now getting lots more water. I love the fact that these things just seem to appear - but I must admit it also thoroughly confuses me.
UK - South Coast Retirement Campus (East)