How to Plant a Tree in Bad Draining Soil

If you have bad draining soil in a spot but are still determined to plant there, the philosophy is to not have the roots immersed in water. By sloping the hole towards a sump you reduce the bog effect around the roots. You can use the gravel sump to pull out water when there is too much water that won't drain.
diagram on how to plant a tree or shrub in bad draining soil