There are so many ways that chili thrips are spread, that I wouldn't worry about sharing cuttings. They can hitch a ride on nursery stock, produce, vegetable starts, the winds from a hurricane or lots of other ways. Cuttings are being shared commercially without being treated for chili trips.

I agree that having a pesticide free landscape is the best chili thrip control. This includes organic pesticides.

I have had very little success rooting cuttings stripped of leaves. I am guessing that you can drown chili thrips, so if you want to be extra diligent, you may want to submerge the cuttings in water with a drop of soap for an hour or so. You also might want to include a disclaimer about the possibility of chili thrips.

I have not heard anything about drowning chilli thrips.... an interesting concept.

I would think if you are rooting the cuttings before sending them, I would not strip the leaves. I would go ahead and root them and the spray them in an isolated area right before shipping.

Our rose society had a guest speaker from the University of Florida (they are doing extensive research on CT's). The guest speaker told us that Imidacloprid is best used as a drench instead of spray for CT's. The best spray for CT's is something that has spinosad in it. Again if you do not want to introduce that in your garden I would just spray them in isolation before sharing. Also if you want to introduce Amblyseius swirski to your garden they will attack the CT's. you would probably need a banker plant to keep them going when there is not enough CT's to keep them alive. Last year we were all given special banker plant and some Amblyseius swirski's. I notice a huge reduction in CT activity.... however, not as much as I would have liked. This year I did the drench and the swirski's.... even less activity.... not all gone. but better. Here is a link to an article that explains using banker plants.

I commend you on your desire not to share the pesky problems.

https://mrec.ifas.ufl.edu/lso/BANKER%20IST/XIao%20et%20al%202012%20Ornamental%20pepper%20as%20banker%20plants.pdf

Thanks for you thoughts. I still don't really know if a soak with a systemic would be a guaranteed prevention.

As for not worrying about spreading a pest or disease, I would respectfully disagree. The reality that others are not taking adequate care to avoid such does not validate a lack of responsibility on the part of the rest of us. In principle, phytosanitary certificates (which double the price of roses come out of CA!) and other protections are in place in an effort to prevent such, and being private individuals should not be a workaround to avoid responsibility. On the contrary.

With RRD destroying numerous rose gardens in my state, I have become rather sensitive to the issue of spreading maladies. The reports on chili thrips that I hear from many regions would suggest that it is something that folks in warmer climates should take very seriously.

I would not want to share any responsibility for spreading a virulent pest.

Drowning thrips would not work. Their eggs are laid inside the wet portion of young stems where they are protected and dormant. My hope would be that a systemic, which presumably flows through the xylem and phloem where eggs might be located, would kill them and prevent them from traveling with cut material.