What Lettuce should I grow for salad?

The darker the green, the more nutrients. You can also use baby chard, baby spinach, and there is a big variety of lettuces. Steer away from iceberg- very little good stuff. Arugula is good, but is too spicy for some, so I'd use sparingly.

Arugula's distinct peppery taste doesn't quite correlate with a high nutritional content. While it does have some vitamins, it lacks other nutrients that other greens boast.

Leaf lettuce is one of the more nutritious of the lettuce family, leaf lettuce is low in calories and high in potassium and vitamins A and K.

Butter lettuce, also called Boston or Bibb lettuce, is the most nutritious of these lettuce. The leaves are higher in folate, iron, and potassium than leaf lettuces.

Hope this helps

the darker the leaves better for you

Arugula, watercress, romaine, radichio, mezclun.... regular bib lettuce is about 90% water.

The darker the green, the better. That said, soft kale is more palatable than the stiff kind. If you use spinach (which is what we do) make sure it is organic. Spinach is typically treated with substances you don't want in your body so the growers can reduce pests and increase harvests.

the best is a lettuce from a heirloom Varity. they haven't been modified in any way shape or form. many veggies are modified for commercial growing, mostly to extend the shelf life.

I love Italian varieties - romaine is nice with a good leaf lettuce and kale mixed in is fantastic. I even like to mix in some spinach.