Abies Firma Known as Japanese Fir, Momi Fir, or Dixie Fir Japanese Momi Fir is not a fast growing tree and you would not want to use it as screen if you need something quick. Japanese Momi fir is a wonderful specimen tree, though. One that should be gracing more Southern Gardens. Imagine! A healthy fir in zones 8 & 9! Japanese Momi Fir is also is cold hardy down to zone 6. For best results, plant Japanese Momi Fir (Abies Firma) in part shade and keep watered the first few years. This will allow the tap root of Japanese Momi Fir to establish more quickly. Buy Japanese Momi Fir (Abies Firma) in the sizes below.