Persicaria minor
Images by part: leaf (5) · flower (5) · fruit (1) · bark (5) · habit (5) · other (3)

Persicaria minor

Small water-pepper · Pygmy Smartweed · Lesser persicaria · Least water pepper · Small persicaria

Tier 2 Difficulty: medium Water: low Light: partial_sun
Temperature
15–37 °C
Soil pH
6–7
Hardiness
Zone 8–11
Click count
271
Observations
239

Description

Source: leafsnap

Persicaria minor is species of herb in the family Polygonaceae. Common names include pygmy smartweed, small water pepper and swamp willow weed. This herb is native to Asia, but distributed widely in Europe and Australia. It is used in South East Asian cooking.

Care Guide

💧 Water
☀️ Light Partial sun

Minor smartweed is found in habitats like forest understories or rocky sites with natural shade. It prefers partial sunlight but can tolerate full sun when necessary. This flexibility lets it thrive under a range of light exposures.

Ideal: Partial sun
🌡️ Temperature 15–37.8°C

Minor smartweed prefers moderate temperatures, similar to those most people find comfortable. It does best in conditions that are neither very hot nor very cold. Excessive heat mainly increases the risk of sunburn, so offering some shade in summer is recommended to prevent overheating. When temperatures decline, Minor smartweed becomes dormant. To sustain continuous growth, warmer conditions must be kept through the winter. Frost can injure the plant and should be avoided.

Ideal temperature: 15–37.8°C
💨 Humidity
Humidity:
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

To maximize the yield and flavor of Minor smartweed, maintain ample nitrogen throughout the growth cycle, from pre-planting through harvest. Plants that are well-watered and fertilized produce abundant, healthy leaves and exhibit reduced bitterness. Before planting, amend the soil with organic matter such as compost or manure, ideally 2 to 8 weeks beforehand.

🪴 Pot & Repot
✂️ Pruning

For optimal growth and health, prune minor smartweed in the early to late spring. Begin by removing any dead or damaged stems, and trim back overgrown areas to maintain the plant's shape. Always use clean, sharp tools to ensure precise cuts. This careful pruning improves air circulation and light penetration, boosting the plant's overall vigor and reducing the risk of disease.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Herb
Life Cycle
Perennial
Genus
Persicaria
Family
Polygonaceae
Hardiness Zone
8-11
Mature Height
30 cm to 61 cm
Mature Spread
20 cm to 40 cm
Leaf Color
Green, Dark Green
Leaf Type
Evergreen
Flower Color
Pink, White
Flower Size
0.25 cm to 0.51 cm
Bloom Time
Summer, Early fall, Mid fall
Planting Time
Autumn, Winter
Harvest Time
Late summer, Fall, Early winter
Native Area
Sri Lanka, Turkey, Sweden, Malaysia, India, Austria, Slovakia, Montenegro, Pakistan, Slovenia, Croatia, Belarus, Uzbekistan, Russia, Germany, Indonesia, Estonia, Romania, Latvia, Belgium, Netherlands, Nepal, France, Tajikistan, Czech Republic, Philippines, Bulgaria, Bangladesh, Poland, Laos, Greece, Ukraine, Serbia, China, Lithuania, Norway, Italy, Kazakhstan, Spain, Switzerland, Vietnam, Denmark, Mongolia, Finland, Iran, Ireland, United Kingdom, Hungary, Thailand

Tags (5)

Common Names (9)

en Small water-pepper
en Pygmy Smartweed
en Lesser persicaria
en Least water pepper
en Small persicaria
en Swamp willow weed
en Minor Smartweed
en Small smartweed
en Spotted ladysthumb