No pro here but I believe the top photo of the plant in the middle of the rush stems looks to be Arrowhead. The scape (stem with flowers) has the tell-tale triple pedal flower and below that are the achenes (seed pods).
2 is American pond weed which is possibly the best veg you can add to a pond.
3 is lilies but I don't know much about variety on those or how quickly they might spread, as I'm experimenting with "hardy" lilies myself.
I "think" you'd have to pull the bulb root or part of the tuber to get the lilies to grow in another location.
Arrowhead can be started from seed but it's quite hard to do effectively unless you have a nursery type setup. AH spreads through the root (tuber) unless you have fall drawdown and seeds can fall on wet soil, then you can get new growth from both once established.
Last edited by Snipe; 11/02/19 10:49 PM.
