Intermediate Sorrel (Rumex intermedius)

Intermediate Sorrel

Rumex intermedius

Tangy, arrow-shaped leaves bring foraged freshness to gardens. Perennial herbaceous plant; common name: Intermediate Sorrel.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; partial sun produces more tender, palatable leaves, while full sun enhances flavor intensity
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Watering Keep soil evenly moist; avoid prolonged waterlogging, but do not allow the root zone to dry out completely in hot weather
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Temperature Hardy to frost and cold temperatures down to -15°C; tolerates summer heat up to 30°C with adequate moisture
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Characteristics

  • Leaf: Basal leaves are arrow-shaped, glossy green, with a tangy, citrus-like flavor; stem leaves are smaller and narrower
  • Flower: Tiny greenish-red clustered flowers on branching, upright spikes
  • Stem: Erect, smooth, reddish-green at maturity
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Care Guide

Watering

Keep soil consistently moist; water deeply when the top 2 cm of soil feels dry

Fertilization

Apply diluted organic feed once monthly. Use nitrogen-rich organic feeds sparingly to prevent leafy growth at the expense of flavor

Composted banana peel tea:Steep fully composted banana peels in water for 24 hours; dilute 1:20 for root drench to support healthy leaf development without overfeeding
Pruning
  • Deadhead spent flower spikes to prevent unwanted self-seeding in garden beds
  • Trim yellowing basal leaves regularly to maintain tidy growth and improve air circulation
  • Cut back foliage to ground level in late autumn to encourage vigorous new spring growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no recorded adverse effects from ingestion

Humans: Contains oxalate crystals; excessive, prolonged ingestion may cause mild kidney irritation or abdominal discomfort

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Garden Uses & Culture

Culture: N/A

Usage: Edible leaves for salads, soups, or tangy garnishes; ornamental ground cover for sunny garden edges