Northern dock - Rumex longifolius (Taxonomy, Characteristics, Invasive, Images)

Northern dock

Also known as: Butter dock

Rumex longifolius is a perennial plant that grows to a height of 61 to 119 cm. It has large, broad leaves, the edges of which are crinkled and undulating. The stems are erect, tough, and unbranched until just below the inflorescence. The stem leaves are alternate and are narrowly ovate–lanceolate and have a rounded or tapered base. The leaf stalks are approximately the same length as the leaf blade. The inflorescence consists of large clusters of racemes which contain small greenish flowers that are bisexual. The fruit is a glossy brown nut with a triangular cross section.

Scientific classification

Species

Northern dock (Rumex longifolius)

Pinks, cacti, and allies

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Toxic to Pets

Toxicity

Perennial

Lifespan

Herb

Plant Type

2 mm to 3 mm

Flower Size

Yellow, Green, Red, Brown, Orange

Flower Color

Semi-evergreen

Leaf type

5 - 32 ℃

Ideal Temperature

Distribution of Northern dock

Distribution Map

Northern dock has a native range that spans across parts of Asia and Europe, including both temperate and arctic zones. Beyond its native habitat, northern dock is found in various regions of North and South America, as well as Australia and New Zealand, representing a broad introduced range. In some areas, particularly in Europe, northern dock may have an impact on local ecosystems, although widespread disruption is not commonly reported.

Native

Cultivated

Invasive

Introduced

No species reported

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Care Guide for Northern dock

Every week

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Water: Northern dock thrives in consistent moisture and requires regular hydration, ideally watered weekly. It tolerates brief dryness but prefers outdoor conditions for natural rainfall and seasonal temperature variation, which influence its growth cycles.

Fertilize: To promote optimal growth of northern dock, use balanced fertilizers with equal nitrogen, phosphorus, and potassium, applied quarterly during the growing season. Avoid over-fertilization to protect roots, taper off in dormancy, and use slow-release formulas. Water thoroughly after fertilization to aid nutrient absorption.

Pruning: Northern dock thrives with regular pruning. Trim dead or damaged leaves in early spring and shape overgrown stems later. Remove flowering stalks to control spread, enhance growth, and improve air circulation. Use sanitized tools and follow local guidelines for optimal care.

Propagation: Northern dock, a member of the Polygonaceae family, is propagated through division. To do this, separate a clump ensuring each division retains roots. This promotes quick establishment. Proper care, including adequate water and minimal root disturbance, is vital for healthy growth and reduced stress during propagation.

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