Slightly Bemused writes:
I have a couple of plants at the front of my house, nestled under the box shrub by the path. Every couple of years a couple of spires arise from the depths and eventually flower with white blooms. I call them my Trffids, but beyond that I do not know what they are. They tend to lean out into the path as if to trap a passing pedestrian or doggie.
I had wanted to get a picture of them upright in flower, but unfortunately they collapsed yesterday, I suspect under the weight of the rains we had. So I had to prune them, and clear the surface for the unwary.
If anyone could let me know what they are, I would be most grateful. The first two photos show them upright before they bloomed, which may help. I tried a Google Image search, but to no avail.