I think an equally interesting point might be why Daffodils tend to outline the foundation of where a house used to be. Yes of course because people planted them there but then you'd expect wild animals to eat and carry the seeds away. Which would mean that the daffodils would expand out adding some background noise; this doesn't happen though. My theory is it's because not many animals eat daffodils and spread the seeds around.
The cultivated varieties rarely seed, and being toxic nobody wants to dig them in any case. Studying the grow I assume that you could even estimate the planting year with a plus/minus reasonable interval.
The reason you see this around old homesteads is that daffodils have bulbs and propagate much more easily that way. One daffodil will turn into many after some years
