cloning is basically copy and pasting dna code, instead of creating new....unlike technology, which deteriorates easily by it's environment , lifeforms are simply put , better built, devinely built in my faith...thus, since a clone from a plant is taken DIRECTLY from it, it has the exact DNA as the donor, can't have a variation exist in the same lifeform to my understanding ... sooo, don't see how it could change unless it needs to adapt in some way, which would take a LOOOOOONNNNGGG time...