Why Is This Lettuce Red? - Short 1/20/2026

Understanding the color and health benefits of Red Oak lettuce

Red Oak is one of my favorite greens because it tastes a little different than most lettuces. It has a slightly nutty flavor and is one of the least bitter red lettuces.

Source: Specialty Produce – Red Oak Leaf Lettuce

What Makes It Red?

That red color comes from anthocyanins — the same pigments that give blueberries, red cabbage, and purple kale their color.

Source: Healthline – Anthocyanin: Foods, Benefits, Side Effects

How Do Anthocyanins Help the Plant?

The plant uses anthocyanins for protection. They act as a "sunscreen," reducing damage from ultraviolet radiation and strong light. They also help scavenge reactive oxygen species (ROS) when the plant is under environmental stress.

Source: PMC – Nature's Swiss Army Knife: The Diverse Protective Roles of Anthocyanins in Leaves

How Do Anthocyanins Help Us?

Anthocyanins are linked to antioxidant activity and may support heart health and reduce inflammation. Research shows they have anti-inflammatory properties and may help improve lipid profiles and vascular function.

Source: Frontiers in Nutrition – Anthocyanins, Anthocyanin-Rich Berries, and Cardiovascular Risks

Source: Journal of Translational Medicine – Action mechanism and cardiovascular effect of anthocyanins

So while Red Oak is still just lettuce, those red pigments are doing more than looking good on the plate.