In the USA, sorrel is most often called garden sorrel or common sorrel. The list of sorrel names usa shoppers run into goes further than that, which is the whole reason it gets confusing. The same leafy plant shows up at one farmers market as sour grass and at the next stall as spinach dock. Each vendor uses the name that stuck where they grew up, and none of them are wrong.
All of those names point to one plant. The species is Rumex acetosa, a tangy green grown for its sharp, lemony bite. When you read garden sorrel, common sorrel, or sour grass on a seed catalog, you are looking at the same thing. The labels change from one region to the next, but the leaf in your bunch does not. The flavor comes from oxalic acid in the leaf, the same compound that gives spinach its faint tang, only much stronger here.
The plant itself is easy to picture. It grows as a low clump of long, arrow-shaped green leaves, and it comes back year after year as a hardy perennial. You reach for it in spring soups, sauces for fish, and salads, since the sour note cuts through rich food. Bruise a leaf, smell it, and the lemon-meets-green-apple scent tells you right away why so many kitchens keep a patch of it going.
Here is where people slip up. Sheep sorrel sounds like a close cousin, and it is a relative, but it is a different and weedier plant. Its botanical name is Rumex acetosella, and it spreads through lawns and field edges as a tough little weed. The leaves are smaller and more arrow-shaped, with two little lobes near the base. You can eat them, but they pack less of the bright flavor you want for cooking, and the plant is more trouble than crop in most yards.
A couple of named types sit apart from the common crowd. French sorrel is sold under its own name, and the Latin tag on the packet is Rumex scutatus. The leaves are low, rounded, and shield-shaped, with a milder and less sour taste. Many chefs pick it for sauces because it is gentler on the tongue. Red-veined sorrel, sometimes labeled bloody dock, has bright crimson lines running through each green leaf. You grow it as much for the look in a salad bowl as for the flavor, and you will find it in seed racks under that showy name.
The trouble with all these nicknames is that they travel. A name like sour grass means garden sorrel in one town and a totally different plant somewhere else. That is why the Latin name matters so much to you as a buyer. Rumex acetosa is the anchor that ties every honest nickname back to the same green, no matter what the chalkboard sign says. Learn that one name and the whole tangle of sorrel names usa markets throw at you starts to make sense.
So when you shop, do not trust the common name alone. Flip the seed packet over and read the fine print. If it says Rumex acetosa, you have true garden sorrel in your hand. The same goes for a plant tag at the nursery, where the Latin name sits in small letters under the cute one. A good packet lists that Latin name right next to the common one, and a vague packet that skips it is worth skipping too.
This one habit saves you from a mix-up at the checkout. You might see the plant tagged as common sorrel, sour grass, or spinach dock, and any of those can be the real thing. But the Latin name is the proof. Read it once, and you will know you are buying the tangy cooking green you came for, not a look-alike weed that ends up in the trim pile.
Read the full article: Sorrel Plant: Grow, Eat, and Stay Safe
