Polygonaceae
Rumex: Dock and Sorrel Care Guide
Rumex
Easy, fast-growing herbaceous plant for sun to part shade. Keep the soil consistently moist and fertile for the best leaf flavor and vigor. Cut flower stalks back before they set seed if you want to stop it spreading, and divide congested clumps every few years to keep growth productive.
Every 7 days
Bright indirect
° - °C
% - %
Categories
What is Dock?
Dock (Rumex) is a easy-care plant from the Polygonaceae family. Rumex is a genus of around 200 herbaceous annuals, biennials and perennials in the buckwheat family (Polygonaceae), commonly known as docks and sorrels. Native across the temperate Northern Hemisphere and now naturalized almost worldwide, Rumex species form tidy basal rosettes of oblong to arrow-sha...
Dock grows up to 1.2m, spread of 45cm, watering every 7 days. It is not suitable for indoor environments and not safe for pets.
Unlike many tropical plants, Dock tolerates watering mistakes. Best for beginners. Without precautions, ingestion can cause irritation in pets. Keep out of reach of cats and dogs.
How to Care for Dock?
TLDR: Dock needs Bright indirect, watering every 7 days, and temperatures between 15-30°C with 40-70% humidity.
How Often Should You Water Dock?
Water deeply about once a week, checking that the soil stays evenly moist rather than soggy or bone-dry. Increase frequency in hot weather or for container-grown plants, and reduce it once temperatures cool in autumn.
How Much Light Does Dock Need?
Give Rumex full sun for the most vigorous growth and best-tasting leaves. In hot summer climates, light or partial shade helps prevent the plant from bolting (running to flower) too quickly and keeps the leaves more tender.
What Is the Best Soil for Dock?
Grow in rich, well-draining soil with a slightly acidic to neutral pH (around 5.5-7.0). Rumex tolerates a wide range of soil textures, from loam to heavier clay, as long as it does not stay waterlogged for long periods.
What Pot Should You Use for Dock?
A deep pot with generous drainage holes, at least 25-30 cm deep, suits Rumex well given its long taproot when grown in containers.
What Is Dock and Where Does It Come From?
Rumex is a genus of around 200 herbaceous annuals, biennials and perennials in the buckwheat family (Polygonaceae), commonly known as docks and sorrels. Native across the temperate Northern Hemisphere and now naturalized almost worldwide, Rumex species form tidy basal rosettes of oblong to arrow-shaped leaves topped, in season, by tall spikes of small greenish flowers that ripen into rust-red seed clusters. Several species, especially Rumex acetosa (sorrel) and Rumex crispus (curly dock), are grown for their tart, lemony edible leaves and for roots used in traditional herbal medicine, while others are common wayside weeds valued mainly for pollinators and wildlife.
How to Propagate Dock?
Growing from Seed
Rumex self-seeds readily once established, so remove flower stalks early if you want to control spread.
- 1 Sow seeds directly in the garden after the last frost, or start indoors 4-6 weeks earlier
- 2 Press seeds lightly into moist, well-draining soil and cover with about 1 cm of soil
- 3 Keep the soil consistently moist until germination
- 4 Thin seedlings to about 30 cm apart once they have several true leaves
Materials needed:
Division
Division also rejuvenates older clumps that have become woody or less productive.
- 1 In early spring or autumn, dig up an established clump
- 2 Use a sharp spade or knife to split the rootstock into sections, each with roots and shoots
- 3 Replant divisions immediately at the same depth as before
- 4 Water thoroughly after replanting
Materials needed:
How Big Does Dock Grow?
TLDR: Dock can reach up to 1.2m tall with Fast growth rate.
Max height
1.2m
Spread
45cm
Growth rate
Fast
Foliage
Deciduous
Warning: Toxic Plant
This plant can be toxic if ingested. Keep out of reach of:
Plant Uses
Edible
Can be consumed
Medicinal
Medicinal properties
Medicinal Uses
- Traditional folk remedy rubbed on nettle stings
- Root historically used as a mild laxative in herbal medicine
- Leaves used in traditional herbalism to support digestion
Culinary Uses
- Young leaves add a tart, lemony flavor to salads and soups
- Sorrel leaves are cooked into classic sorrel soup and sauces
- Leaves can be used as a spinach substitute in small quantities
Is your plant showing symptoms?
Click on the symptom to discover possible causes:
What Diseases Commonly Affect Dock?
TLDR: Dock is susceptible to 6 known diseases. Monitor regularly for early detection.
Rust
Rust is a common fungal disease caused by fungi in the order Pucciniales that affects a wide variety of plants. The disease gets its name from the characteristic orange, yellow, or reddish-brown pustules that appear on leaves, resembling metal rust. This obligate fungal parasite requires living plants to survive and can cause significant economic losses in agricultural crops.
Powdery Mildew
Powdery mildew is a common fungal disease caused by various fungi species including Erysiphe, Podosphaera, Oïdium, and Leveillula. It affects over 10,000 plant species worldwide. The disease thrives in warm, dry climates with high humidity and appears as a distinctive white powdery coating on plant surfaces.
Alternaria Leaf Spot
Alternaria leaf spot is a common fungal disease caused by Alternaria solani and Alternaria alternata that affects a wide range of plants including tomatoes, potatoes, brassicas, and ornamentals. The disease thrives in warm, humid conditions and can cause significant crop damage if left untreated. Spores overwinter on plant debris and can attach to seeds, making complete elimination difficult.
Aphids
Aphids are small, soft-bodied, pear-shaped insects (1/16 to 1/8 inch long) that feed by sucking nutrient-rich sap from plants. They reproduce rapidly and can quickly weaken plants, causing distorted growth and transmitting plant viruses. Aphids come in various colors including green, black, red, yellow, brown, and gray. They secrete honeydew, a sticky substance that attracts ants and encourages sooty mold growth.
Meaning & Symbolism
In folk tradition dock is linked with soothing and patience, most famously as the age-old remedy rubbed on nettle stings ("nettle in, dock out"). Its persistence as a hardy wayside plant has also made it a folk symbol of resilience.
Fun Facts
The genus name Rumex is the classical Latin name the Romans used for these plants
Dock leaves are the traditional folk remedy rubbed on stinging nettle rashes
Some Rumex seeds can remain viable in the soil for decades, sprouting whenever conditions allow
Frequently asked questions
Is Rumex easy to grow?
Is Rumex toxic to pets?
Can I eat Rumex leaves?
How do I stop Rumex from spreading?
Compare with similar plants
| Attribute | Difficulty | Light | Watering | Pet Safe |
|---|---|---|---|---|
| Field Maple | Easy | Bright indirect | 14d | ✓ |
| Silver Birch | Easy | Direct sun | 14d | ✓ |
| Common Blanketflower | Easy | Direct sun | 10d | ✓ |
| Cushion Bush | Easy | Direct sun | 14d | ✓ |
Choose & Compare
Sources & References
- RHS - Rumex acetosa (common sorrel)
- Plants For A Future - Rumex acetosa
- ASPCA - Toxic and Non-toxic Plants: Dock
- ASPCA - Toxic and Non-toxic Plants: Sorrel
- Frontiers - Nutritional value of Rumex plants in livestock/poultry
- Plant Disease - First Report of Alternaria alternata leaf spot on Rumex crispus
- Damage to Rumex crispus/obtusifolius by rust fungus Uromyces rumicis
