Common purslane (Portulaca oleracea) is technically classified as a weed, but it’s also one of the most nutritious plants you’ll find growing in a yard or garden. It appears on weed lists across North America, where the USDA considers it both native and introduced depending on the region. At the same time, it’s eaten as a vegetable in cuisines around the world. Whether you should pull it or harvest it depends on where it’s growing and what you want from your garden.
Why Purslane Is Classified as a Weed
Purslane checks every box for what makes a plant a weed. It’s a fast-growing annual succulent that thrives in poor, compacted soils and drought conditions. Its prostrate, reddish stems branch out in all directions, forming circular mats that crowd out other plants. It tolerates neglect better than most things you’d actually plant on purpose.
The main reason purslane is so hard to control is its seed production. A single plant can produce up to 240,000 seeds, and those seeds remain viable in the soil for up to 40 years. That means even if you clear every visible plant this season, dormant seeds from years or decades ago can sprout next summer. Its taproot and fibrous secondary roots also make it resilient. Pull it carelessly, and stem fragments left behind can re-root in moist soil.
It’s Also a Surprisingly Nutritious Food
Here’s where purslane gets interesting. It has been identified as the richest vegetable source of alpha-linolenic acid, an essential omega-3 fatty acid your body can’t make on its own. A 100-gram serving of fresh purslane leaves contains roughly 300 to 400 milligrams of omega-3s. That’s five to seven times more than spinach. In the leaves, omega-3 fatty acids make up about 50% of the total fat content.
Beyond omega-3s, purslane contains higher levels of beta-carotene and vitamin C than many major cultivated vegetables. It also carries flavonoids and phenolic compounds that have demonstrated antioxidant activity stronger than vitamin C and vitamin E in lab studies. Compounds unique to purslane have shown anti-inflammatory properties in research, reducing several key markers of inflammation.
How People Actually Eat It
Every part of the plant above ground is edible: leaves, stems, buds, and even the small yellow flowers. Raw purslane has a bright, slightly citrusy tang with a satisfying crunch, which makes it a natural fit for salads, sandwiches, and wraps. The leaves are succulent and juicy, more like a crisp green than a leafy one.
Cooked purslane softens and releases a mild mucilage that naturally thickens soups and stews. In Mexico, it’s stewed with pork and tomatillo salsa in a dish called verdolagas con puerco. Greek and Turkish cooks blanch it and dress it with yogurt, garlic, and olive oil. In India, it gets added to lentil stews for tang and body. Chinese cooking uses it in soups and stir-fries. Pickling purslane is another traditional approach that gives it a tangy crunch and extends its shelf life for months.
One Important Caution: Oxalates
Purslane leaves contain 671 to 869 milligrams of oxalates per 100 grams of fresh weight. That’s a high number. Oxalates bind to calcium and can contribute to kidney stone formation in susceptible people. If you have a history of calcium oxalate kidney stones or kidney disease, purslane is worth avoiding or eating only in small amounts. Cooking and blanching can reduce oxalate levels, as can pairing it with calcium-rich foods like yogurt or cheese, which bind the oxalates in your gut before they reach your kidneys.
Don’t Confuse It With Spurge
Purslane has a toxic lookalike that grows in the same places: spurge. Both are low-growing plants that spread across lawns and garden beds, and from a distance they can look similar. The fastest way to tell them apart is to snap a stem. Spurge releases a milky white sap that can blister your skin and cause painful rashes. Purslane produces only clear, watery moisture at the break point.
Other differences are easy to spot once you know what to look for:
- Leaves: Purslane leaves are thick, fleshy, and smooth-edged with a club-like shape. Spurge leaves are paper-thin, flat, and have serrated edges.
- Stems: Purslane stems are fleshy, hairless, and can grow as thick as your pinky finger, typically reddish-purple. Spurge stems are thin (no thicker than a toothpick) and covered in fine hairs.
- Flowers: Purslane produces small yellow flowers. Spurge flowers are white to pinkish.
- Leaf arrangement: Purslane leaves are alternate and cluster at stem joints. Spurge leaves grow in opposite pairs along the stem.
Weed or Garden Plant: Your Call
If purslane is popping up in your vegetable beds and competing with your tomatoes, it’s acting as a weed and you’ll want to remove it before it goes to seed. Pull it when the soil is moist so you get the full root, and don’t leave stem fragments on damp ground where they can re-root. Removing plants before they flower is critical given how many seeds each one can drop.
If it’s growing in a spot where you don’t mind it, or you have an area you’d like to dedicate to a low-maintenance edible ground cover, purslane is hard to beat. It requires almost no care, tolerates heat and drought, and gives you a steady supply of omega-3-rich greens through the summer. Some gardeners deliberately let it fill in bare patches between rows, harvesting the tender tips regularly to keep it from setting seed and spreading beyond where they want it.
The honest answer is that purslane is both a weed and a valuable food plant simultaneously. The label depends entirely on whether it’s growing where you want it.