Most literature on pond planning will recommend siting a pond away from trees - and for very good reason. But, if you are willing to put in the maintenance work to prevent tree-related problems to your pond, siting it under a tree is possible. Here are some points you need to take into consideration:

  • plant only those aquatic plants that will grow happily in the shade
  • Construct a screen over your pond during leaf fall - the decomposition that occurs from accumulated leaves affects the quality and clarity of the water as well as causing health problems for fish. Oak leaves, maple leaves and pine needles produce tannic acid, which causes the water to turn brown and stresses fish making them more susceptible to disease or could kill them.
  • Root intrusion can lead to the need for major repairs to pond liners and protective underlay liners. A barrier needs to be installed around the pond to prevent root intrusion or consider an above the ground pond.  There are, however geotextile barriers on the market, which can be put into a trench dug between the tree and the pond.

With careful planning and construction, it is possible to create a tranquil water feature under a tree in your garden to blend in with the overall landscape design.