Unfortunately, clones do have shorter lifespans than normal creatures. They're definitely not the same as naturals, but what causes them to die we can't be sure of. For instance, to perfect Dolly, over 200 attempts were made. And that's not all:
Seventy calves have been created from 9,000 attempts and one third of them died young; Prometea took 328 attempts. Notably, although the first clones were frogs, no adult cloned frog has yet been produced from a somatic adult nucleus donor cell.
I'm skeptical about cloning food... there's definitely a downside to it somewhere along the line...