Planting chrysanthemums in a huge greenhouse when I was...12 or something. Only did it for a couple of weeks. It was almost literally backbreaking work. I was already pretty tall when I was 12, and had a pretty weak back, so sitting on a metal tube on my knees for hours on end planting tiny saplings wasn't exactly the job for me. Paid pretty good if you were good at it (you get payed for each box of flowers you plant; the faster you plant, the more cash you get), hence why it was a pretty popular job among local teens although it was illegal. That kind of work is getting done by Polish worker immigrants now, and they can do it legal ;-) Hence why I started working at the local supermarket as a jack-of-all-trades when I was 15, still work there (18 now). Pays....decent-ish, 3.56 euro's an hour.