Finally had time to work on this. So the way I understand it is.. Results of mutating a plant can be predicted thusly:
Plant #1 (Mela Rare Oak) will mutate into #2 (Four Petal Maple) OR #15 (Red Berries Cactus). Mutating plant #2 (Four Petal Maple) results in either #1 (Mela Rare Oak) OR #3 Cactusbali Bamboo Tree, etc etc but what about plants #14 (Green Ivy Lotus) & #23 (Tahitian Ridged Cactus)? What do they mutate into?