zip vs tied
I don't trust zip lock bags to stay sealed in the event of an airplane ride, I've had too many things leak in suitcases on trips.
IMO, it is better to use tied bags, not too puffed up with air, lots of slack in the bag. I wrap the plant in damp newspaper, wet, but not soggy, no dry spots (had a plant ruined when the paper was spotty with water).
No free water in the bag, for it sloshes around and can tear plants if paper was used. Newsprint is pretty strong, better than most papertowels IMO, unless you have the strong type.
Double bag the wrapped plants, for the mail service is pretty upset if wet stuff leaks over other people's mail.
I usually mail on Monday after trimming on Sunday, but I will note that often a Tuesday mailing gets there just as fast, I suppose since the volume on Monday is so heavy. Mail at the post office, Priority, in the free box they have. I ususally use the 2"x12"x9" or something like that, the smaller one is tight for most plants.
If there is much $ involved, you may want to have the buyer pay for Confirmation, for 80 cents or something like that. For something easy to replace, like stems, if it never arrives you are just out postage if you have to replace, but for a hard to duplicate plant like a large sword, you want to be able to confirm that it was delivered.
And, get payment in advance. I was only stiffed one time, for after one time, I learned. No, actually, the guy said he never got the first box, so I sent a second, and that was the last I heard from him. He never paid for any of it, not the item, nor any of the shipping costs. Pretty crummy of him, but who knows what happened.
Member AGA, HAS, NASH
110G, 10 adult discus, barebottom with plants on wood
58G, 3 adult discus, barebottom with plants on wood
59G thickly planted tanks, rummey nose tetras, kuhlies
300G goldfish pond outside