My longest have gone 7 months without roots. The only citrus I have successfully rooted is the Kuharske Citrange. 75% success.

6b Steve.

I never would have dreamed they could have survived this long without roots. If indeed they don't have roots is there anything at this point that I can do to encourage them?

Too late now, just keep doing what you are doing and keep praying. When roots appear, new growth will follow.

I have a cutting also that still is green, not rooted yet ( checked it last week), sitting there for 5 months.

As Silica said, I had a rooting that stayed green for a year and half before it did anything, and that's in a nice warm greenhouse setting..

I am glad I saw this thread. I was just commenting that I thought I may have successfully rooted my first cutting because it is still green after about a month...sigh...It was a large limb from my ST tree. I am afraid to check because what if it has tiny roots and I break them when I check?

I agree with you, Laura, and not check now. I imagine a sign of having formed roots is pushing out new growth. I started 3 Dekopon cuttings 11 months ago. Two died and the third just recently put out some very tiny new growths.