What works for me with mold is wash the cutting with a 10% bleach solution. So that's 1 measure of bleach with 9 measures of water. I let it dry off without rinsing.

I think using sphagnum moss as a rooting medium can also inhibit some mold. Not perfect, I have also heard of moldy sphagnum

I've rooted in seed-starting medium which is peatmoss and vermiculite. That seems to stay free of mold.

Hi eukofios,

I used to send cuttings damp in paper towels inside ziplock bags, but they usually failed the receivers. I read a recent thread about folks sending them dry, so this time I tried that. I have heard about the bleach idea, but I'm as chemical-free as possible. If the forum ever comees up with a fool-proof technique, I'll go with the group.

Bud,
The dry method should work. I've started a number of fig trees from cuttings sent dry in the mail, in plastic bag. Some times I've bleached, and some times not. I had not heard about sending them damp.
Happy Growing!