After beating the elite four, watch out for tv ads about a man called a pokeblock master or something like that. Once you see the ad head over to the Pokemon contest building and you'll see the master there. Mix berries with him and they will probably make gold pokeblocks.
Green!
In emerald you get them in the contest hall by making them with berries.
Do that game almost perfectly with friends or the pokeblock master.
Berries are for making poke blocks of for crushing if you want to make poke bloks you go to the contest house in lilly cove if you want to crush them you go upstairs and talk to the middle lady for that you will need a wirless connection.
You can berry blend in the Contest Halls
There is no poke blocks in sinnoh it is called poffins and to make them you need to go to hearthome city and have some berries with you as well and find the house that helps you make poffins.
There is no poke radar in emerald. Only in diamond and pearl and platinium
you can make make poke bloks by going in a contest builing look for a box people are surronding it and go to a empty space and click the a bunttom
You cant get poke blocks in Pokemon xd gale of darkness. They are only aquirable in ruby, Sapphire, and emerald.
go to a poke mart go to a poke mart
under the water
it is on the ship in the water