Bloody dock (Rumex sanguineus), also known as bloody sorrel, red-veined dock, and red-veined sorrel, is an eye-catching and easy-to-grow choice for foliage interest in beds, borders, and containers. The plants grow in 12- to 18-inch-tall clumps of bright green leaves that are heavily veined in deep red, making them very ornamental. You can also pick the young leaves for fresh use in salads, but they may cause stomach irritation in some people, so use them sparingly.
Bloody dock does flower, sending up stringy stalks of tiny greenish flowers that mature to brown seeds. But if you don’t intend to collect the seeds, it’s best to trim off the flower stalks as they form, because the plants can self-sow enthusiastically. Or, cut the entire plant just above the ground when the flower stalks begin to appear: that prevents self-sowing and also gives you a flush of fresh, colorful leaves that good into fall. Full sun to light shade; moist soil. Perennial in Zones 5 to 8, but you can also grow it as an annual.
Collected in 2019 for the 2020 growing season. At least 20 seeds.