Red Vein Dock (Rumex sanguineus)

Red Vein Dock

Rumex sanguineus

Crimson veins paint its leaves like watercolor strokes. Herbaceous perennial foliage plant; common names: Bloody Dock, Red Vein Dock.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Thrives in bright partial sun; tolerate light shade, but intense midday direct sun may scorch foliage veins
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Watering Water when the top 2 cm of soil feels dry; avoid waterlogging to prevent root rot in heavy clay soils
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Temperature Prefers cool to temperate conditions; can tolerate short periods of light frost down to -5°C
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Characteristics

  • Leaf: Basal rosette of oblong, glossy green leaves with prominent deep crimson veins
  • Flower: Tiny greenish-white clustered flowers on erect, reddish-green branching stems
  • Stem: Slender, rigid flowering stems rise 0.2–0.4 m above the foliage rosette
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Care Guide

Watering

Keep soil evenly moist to support foliage growth; avoid drying out completely

Fertilization

Apply diluted balanced liquid fertilizer once monthly. Avoid high-nitrogen fertilizers to prevent excessive foliage growth that dilutes vein color

Banana peel compost tea:Compost banana peels for 2 weeks, steep in water for 24 hours, dilute 1:20 with water for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Remove spent flowering stems to redirect energy to foliage production
  • Trim yellowing or damaged basal leaves to maintain a tidy rosette shape
  • Divide overcrowded clumps every 2–3 years in early spring to refresh growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Mildly toxic; ingestion may cause oral irritation, drooling, vomiting, and decreased appetite

Humans: Contains soluble calcium oxalates; large ingestion may cause mild oral irritation and stomach upset

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental foliage for garden borders and container displays; young leaves can be eaten in small quantities in salads