Can you recommend a frost hardy, water tolerant, fastigiate tree climate Zone 7?

Chinampas: Can you recommend a frost hardy, water tolerant, fastigiate tree climate Zone 7 please?

• I would prefer a hardy equivalent to Salix Bomplandiana used to reinforce the edges of chinampas or any other recommendations. Climate Zone 7. The main thing is that it can tie together waterlogged soils and cast minimum shade.

• Answer:

  I am about to start a Chinampa type project. I am cheating a bit because the water places i am gonna dig out ,and this will give me ground to raise the people parts as well all the edges are Mangroves http://byderule.multiply.com/journal/item/13 but strictly tropical I am sorry i cannot answer your question so here is some general babble Trees with only fish food for droppings is a good idea Trees on the edge must be very wide rooting ,when they get big the weight can pull them over and often does Very widely spaced because the trees will also give the water too much shade ,and the branches that hang far over the water are a bind to trim so defeating the idea of strengthening the edges I prefer low stuff and grasses on an edge what about ,papyrus ,and canes like Spanish reed,and there is a great variety of edge plants that double up as fish food , Nastersium ? is a great food (edge )plant for everybody ,you can eat everything ,the capers,flowers and leaves in the salad. Inside the water it must be shallow on the edge, so that you can grow water cress,Indian and Chinese water chestnut and reeds to grow algae on (more fish food ) lilies like lotus for water shade (they need about a meter deep to root in ) Reeds and Bamboos sounds the best for filtering heavy ground flow and binding the soil there are many varieties that can handle frost Go for the same kind of stuff that grows on water edges ,in the wild , Always consider IN the water for a planting edge as well. so there are 2 edges one dry and one under water. Incidentally there is a guy in Amsterdam that makes floating islands out of tons of styro foam from the dumps ,ties it together with fish nets and covers with compost and soil he `s got some big trees growing on them ,unreal free floating Chinampas made from rubbish the rule of thumb for the concept of Chinampas is that every plant and tree should be food for somebody which reminds me ,leave some space on the edge for a jetti and the pig pen or/AND CHICKEN HOUSE ,more fish food WITH THE FLOORS SLOPING INTO OR BETTER STILL OVER THE WATER So the idea was to talk you out of planting trees on the edge . In the tropics the mangroves are different they are part of the time submerged and provide the richest places for the fish Willows are great that can live part of the time under water ,but they get huge and break apart when they are very big ,and then begin to grow from the horizontal position. Mimosa or wattle is a bushy branchy fast growing small tree that likes to get its feet wet, but it also breaks apart when it gets big,and its invasive if the conditions are right,Great to plant for fire wood on the edge of a property is this a big place????