"James" wrote:

I have a spot for planting that gets partial sun/shade. Which of these
two plants, Hemlock, or Avorbortae (not correct spelling, but close),
would do better in partial shade?

It depends upon how partial. Arborvitae will tolerate shade. Hemlock
demands shade. Arborvitae will tolerate poor soil and dry soil.
Hemlock demands good moist well drained soil.

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