My Navel Orange and Blood Orange Air Layering Failed, But my Eureka Lemon has some good roots forming. Are types of Oranges harder to Air Layer? Found a small bag of Sphagmum Moss at the store, used a mixture of Peet and Perlite before, trying Sphagmum Moss to see if it makes a difference.

Generally, oranges may take some extra time to grow any roots. You probably should've left your air layers wrapped for several more weeks, before making any conclusion... The use of rooting powder can help in such cases.

Best,
Igor