I moved into a new place with a very small 'yard'. I would like to plant a Hinoki cypress, but there is no direct access to the earth because the whole yard is covered with deck or porch.

There is a fairly large planter, ~6'x3' right triangle, about 3' tall. The walls are concrete block (2 blocks thick, except the top ~10"), and the bottom is 'lined' with additional concrete block/rubble, then filled with about 18" of soil.

**Question**: If I plant a dwarf Hinoki Cypress (nana gracilis) in the wide end, can it thrive? What can I do to improve its chances?

Some other info about the planter:

 - It is on the south-facing part of the building, so gets a decent amount of sun.
 - Climate-wise, I live in the Boston, MA area.
 - I could remove the concrete blocks in the bottom to double the depth of the planter, which would then be contiguous with the soil below.
 - I haven't found any draining holes in the side of the planter, but I'm not sure if that matters given the way it's built (open to the earth below).

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/Lne1Q.jpg