Dan, I grew one this year that looks very similar, it's called Freckles. This one was planted at the community garden in full (all day) sun, and it still hasn't bolted. However, mine it almost completely green. I wonder if the amount of sun it gets altered the coloring a bit?

The Simpson Elite is starting to bolt, and the Cimmaron is looking like it is heading that way, but New Red Fire, and Nevada are still going strong.

None of the ones I'm growing are a solid red color though. Any thoughts on a good, heat resistant red lettuce?

It's going to be another scorcher today, so I'm thinking a salad for dinner sounds pretty good! I'm thinking there might even be a carrot or two that's ready for picking ...

Bonnie

Bonnie, my 'Freckles' bolted already, looks similar but smaller dots, maybe sun is bleaching somewhat. I had a red-ish butterhead called 'Skyphos' that bolted early (but still took some heat) . 'Mottistone' is all I have left of all the "heat-tolerant" types. But my garden is against a south brick wall, so hotter here and warmer nights on the SW side of a hill...

Dan

Have I posted this link to that CSU research on lettuce varieties and bolting lately?

I think Nevada is a great choice. I guess I really should explore these Summer Crisp/Batavian choices a little more.

It's good to be able to celebrate a variety that performs well!

Steve

Here is a link that might be useful: Lettuce varieties

This is my first year but I've been having good luck with 'Salad Bowl' - I just wish I liked the taste better!!! oh well. I also have some 'Summertime' in but it's been slower going. I'm hoping it's better tasting.