Water
Keep the soil consistently moist, especially during dry periods. Water deeply when the top 2-3 cm of soil feels dry. Avoid waterlogging, as this can lead to root rot.
In very hot weather, more frequent watering may be necessary.
Also known as Butter Dock · Door-Yard Dock · Dooryard Dock
Northern Dock (Rumex longifolius) is a robust perennial herb with large basal leaves and tall flower stalks, often found in damp meadows and roadsides.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
50% intensity
Thrives in sunny locations but tolerates some shade.
Consistent Moisture
50% intensity
Prefers moist soil, but avoid waterlogging.
Clay, Loam, Sandy, Acidic, Neutral, Alkaline
50% intensity
Cold Hardy
25% intensity
Resistant to cold temperatures; can survive winter outdoors in many climates.
Light Feeder
25% intensity
Minimal fertilization needed; a balanced feed in spring is sufficient.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | Yes |
Contains oxalic acid, which can cause gastrointestinal upset if ingested in large quantities. The roots and seeds are considered more toxic.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep the soil consistently moist, especially during dry periods. Water deeply when the top 2-3 cm of soil feels dry. Avoid waterlogging, as this can lead to root rot.
In very hot weather, more frequent watering may be necessary.
Prune in late winter or early spring before new growth begins. Remove any dead, damaged, or crossing stems. Cut back established plants to tidy them up and encourage fresh foliage.
Spent flower stalks can be removed after blooming to prevent unwanted seed spread.
Propagate by division of established clumps in early spring or autumn. Sow seeds in autumn or early spring. Seeds may benefit from a period of cold stratification.
Divide plants carefully, ensuring each section has roots and shoots.
Rumex longifolius is a vigorous grower and can become root-bound. Repot in spring every 2-3 years, or when the plant outgrows its container. Choose a larger pot with good drainage and fresh potting mix.
Divide overcrowded root balls during repotting.
Identify plants like this with ePlant AI
Snap a photo to get care tips and match similar species on the go.
Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Northern Dock (Rumex longifolius)
Where Northern Dock (Rumex longifolius) is found
Density
Tap map to explore
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Polygonaceae |
| Genus | Rumex |
| Species | Rumex longifolius |
Similar in genus Rumex
Answers based on plant encyclopedia data
