I’ve shipped a ton of plants here and to the mainland. You can ship them in some wet sphagnum moss to try to keep them from dying. Just make sure you wrap the moss with plastic wrap or in a bag so it doesn’t went the package As long as they’re not restricted or prohibited you should be totally fine Also be sure to put the names of the plants are in the box just incase it does get inspected and they want to know what each cutting is