farmers produce about 90% of the nation's total avocado crop, and that includes farmers like mark and linda bre of simi valley in ventura country. not from a farming background and surrounded by a huge housing development, the couple really didn't know what to do with all of the lush land they had when they bought the property back in 2000. >> because we'd always talked about having a ranch, mark and i had talked about it, we did not know what that meant. but that was our--i guess it was a dream, but didn't have any idea how it was going to evolve. and then >> a friend of ours said, hey, this looks like good avocado property. and not knowing anything about avocados other than that's what i put on my tacos, i said, oh, sure, let's avocados. >> so the couple learned as they went along, everything from soil science to irrigation techniqu. and before they knew it, they had developed a thriving avocado orchard along the way. they now have 8,500 avocado trees, trees that have come to mean more to the couple than they ever could have imagined. >> we like to think that we have 8,500 employees working f