Botanical Name: Rumex sanguineus Common Name: Red Vein Dock Hardiness Zone: Perennial in USDA Zones 5–9 Size: 12–18" Tall × 12–18" Spread Growth Habit: Upright, Clumping, Basal Rosette Sunlight: Full Sun to Partial Shade Soil: Rich, Well-Drained Soil; Moist but Not Waterlogged Water Needs: Moderate; Prefers Consistent Moisture Bloom Season: Late Spring to Early Summer (Flowers Are Secondary) Fertilizer: Minimal; Compost or Light Spring Feeding Features: Bold Green Leaves with Deep Red Veining, Strong Foliage Contrast, Cool-Season Color Uses: Borders, Mixed Beds, Containers, Foliage Plantings Patent: ❌ Not Patented Propagation: Division or Seed

More About Red Vein Dock

Red Vein Dock is grown primarily for its dramatic foliage rather than its flowers. Broad, glossy green leaves are etched with vivid red veining that intensifies in cool weather, giving the plant a striking, almost stained-glass appearance. Its upright, clumping habit adds structure and contrast to mixed plantings, making it especially valuable in designs that rely on foliage interest as much as blooms.

While flower stalks appear in late spring, they are typically removed to maintain a clean, foliage-forward look. Red Vein Dock performs best when soil remains evenly moist and is especially effective as a contrast plant among softer textures or flowering perennials.

Why We Like It (Our Trials)

In our trials, Red Vein Dock has proven to be a reliable foliage perennial with consistent performance across sun and partial shade. It establishes quickly, maintains strong leaf color through the growing season, and holds its form without spreading aggressively. We especially value its ability to provide visual interest during bloom gaps, anchoring plantings when flowers fade or pause.

Its red veining becomes especially pronounced in spring and fall, making it a standout during transitional seasons when many gardens lack color. With basic moisture management and good drainage, it has shown excellent longevity and minimal maintenance requirements.

Red Vein Dock vs. Other Foliage Plants

Compared to Heuchera, Red Vein Dock offers bolder, more graphic leaf patterning and a stronger upright presence, making it better suited for structural roles in borders and containers. While Coleus provides brighter color options, Red Vein Dock delivers a more refined, perennial alternative with greater cold tolerance and longevity.

When compared to ornamental sorrels and other Rumex species, Rumex sanguineus stands out for its consistent red veining and clean growth habit. It’s an ideal choice when you want foliage contrast that feels intentional, durable, and easy to design around rather than flashy or short-lived.