@dellac, There may be some things, like seeds for instance, that are not subject to phytosanitary rules. Check with your government hort office, maybe?
You might want to just do some research (shopping) online on some commercial nursery sites that do export plants. Might be much more enjoyable than wading through the 'official' document. Use the "contact us" link to e-mail the nursery about the procedures and costs. I know one nursery locally here that exports all over the world. Not that they would have much that's suitable for your climate, though, unless you have a greenhouse. www.tropiflora.com
It might actually be less expensive in the long run to buy from commercial sellers who already have the means in place to export, rather than to try to trade plants with a private person who would have to jump through all the hoops for you. I do think that most national authorities ARE trying to prevent the spread of plant diseases and pests by preventing private exchange of plant materials.
I do know at least one person who has tried to bypass the system, got caught, and her plants languished in an inspector's office at the receiving end for weeks, until they were dead. She still had to pay fees and fines and take delivery of the package once it was "inspected".
