I get rice, flax, coffe and canola plants in the Betweelands dimension while they aren't supposed to generate at all in this dimension.

Add them to the plant dimension blacklist.
I have not forgotten anything, you have just forgotten to check the config.

You were the one being rude first, you just edited your comment to remove it ;)

Thanks for the quick answer, and there is no need to be so rude. :)

Yeah maybe I sounded rude but I didn't want to be. ^^'