He is very proud of the lettuce we are harvesting now. Sowing in the fall or early spring is straight forward  when it is cool. Germination is easy compared to the times when it gets above 90F and seed like lettuce go dormant and will not sprout. Roberto waits until there are a couple of days with lower temperatures forecast and then he sows the seed in the morning. Immediately after, Jose turns on the water to keep the seeds cool. We have the last section of the farm set up on permanent sprinklers. This enables us to irrigate these temperature sensitive crops frequently during the day at this time of the year. There are three varieties of lettuce planted on this bed, all heat tolerant types. We have already picked the romaine which was in the foreground.