For what it's worth, half of my cuttings got put in cups the second I saw roots emerging and the other half I let the roots grow so big I almost couldn't fit them in the cup before putting them in cups. The cuttings with the bigger roots have filled the cups with roots in 9 days, while some of the others are barely showing roots at all(although the foliage is gorgeous and strong). Also, scoring cuttings and using dip n grow literally grew roots on cuttings in 10-12 days, while the same cuttings, in the same environment(75 degrees, spaghnum moss) with out dip n grow took a month.

i would say wait until you have a root mass in the cup so soil dont fall off and damage roots. with the cutting with massive roots to start with i would go right to the pot. i have rooted right in 1 gal pots without problems. but thats just me

Lukie29,
I usually start in Moss and cup as soon as cutting is callused and has minimal roots showing. My results with scoring and hormone are similar to yours, and the time difference between hormone and none is 2 weeks at 75 deg F. Once cupped the cuttings are kept at 75 deg F. for 2 weeks and the roots are usually visible on the outside of the cups within that time. I performed the experiment to compare the two methods and scoring. Scoring seems to help with callus formation with and without hormone.

I like to cup them when roots are about 1/2" long.

Half inch roots is what works for me also.

I had some problems rooting in rockwool because I left it too wet. Then I used three gallon pots with mulch and mist and I had 100% success. Now they can remain in the pot for a while!

I start in sphagnum moss and when the roots are 1/2 inch to 1 inch or so I pot them up. When they're too long I usually end up breaking them while try to fit them in the pot. This year I've been paying more attention and not letting the roots look like a bowl of spaghetti before they get potted.

I pot them up as soon as I see any roots at all.  Really I have no reason to think this is the best method, but it seems to work.  Hopefully as this thread develops we can change my mind.  :-)

I let them get 1-2" long, and I want a bunch - not just 3 or 4.  I believe even if a few break, there are the rest that could pick up the difference until the broken roots are either replaced (if broken from close to the cutting) or they start branching out from being "pruned".  Also, so I have less chance of drowning the poor things.

Greg...I do the same as you(post #8)... any roots at all and they go into the cups...I leave them in there until I can see roots on the sides and bottom of the cups(gives them a chance to settle in a little)...and then into the 1gal. pots.