This is the first pineapple plant that actually survived when I tried to get it to produce roots in a jar of water, one year on.
I suspect it has split into three separate plants, but information about pineapple propagation beyond actually getting them to produce roots seems to be rather more sparse. It’s going to go into the ground in Frankenstein’s Greenhouse anyhow. If it survives there then great. If it doesn’t then trying to keep it alive is perhaps not the best use of my time. Even so I’ll be glad that I tried it, just for the experience of having got new plants to grow.