Lettuce bolting

I missed the Farmer's Market in Bellville this week. I have several heads of lettuce I could have taken, but didn't go. I did stop by to drop off empty egg cartons and look for fresh eggs, Joan's mother said she sold out early, if I had taken my lettuce I probably would have sold out too, as mostly the people there had baked goods.

I've given away 5 heads, used two for DH and myself, plan to take 3 with us when we go to the farm next, and will take 2 to my daughter tomorrow.

The lettuce is close to bolting. I arranged a number of my shelving unit shelves over the heads, and then draped the shade cloth from my green house over the shelves, and weighted them down with rocks. Hopefully that will provide enough shade to cool it down 5 to 10 degrees.