That walkthrough is just a "getting started" guide. I believe that Yorzah wants something a bit more detailed. Like start with these four plants, cross A & B and you'll get Magic Plant #1 (E), cross E & C, and you'll get Magic Plant #2 (F), cross C & D to make G, then cross F & G to get magic Plant #3 (H). etc.
I'm working on something like that, but I haven't yet worked out the most efficient crosses to get all of the Magic Plants.
_________________________
Red Sox--2007 World Champions!
Celtics--2008 NBA Champions!
Isola is a magic island! All sorts of strange things can happen, and often do happen. -- arnie