Lathraea clandestina
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Lathraea clandestina

Purple toothwort · Hidden toothwort

Tier 2 Difficulty: medium Water: low Light: full_shade
Temperature
5–32 °C
Soil pH
6–7
Hardiness
Zone 5–8
Click count
135
Observations
2,726

Description

Source: leafsnap

Lathraea clandestina, commonly known as the purple toothwort, is a parasitic plant belonging to the family Orobanchaceae. Native to Europe and Western Asia, it thrives in damp woodlands, along riverbanks, and in other shaded areas. Lacking chlorophyll, the purple toothwort depends entirely on its host plants for nutrients. It attaches to the roots of trees such as alder, hazel, or willow using specialized structures called haustoria, which penetrate into the host's roots. The plant features a fleshy stem that can grow up to 30 cm tall, adorned with small, scale-like leaves that are reduced in size due to its parasitic nature. Its tubular flowers, ranging in color from purplish to pink, bloom on spikes at the top of the stem. While some cultures have used the purple toothwort for its purported anti-inflammatory properties, it is important to note that the plant can be toxic if ingested. Overall, Lathraea clandestina is a fascinating example of a parasitic plant with unique adaptations that enable survival without photosynthesis.

Care Guide

💧 Water
☀️ Light Full shade
Ideal: Full shade
🌡️ Temperature 5–32.2°C
Ideal temperature: 5–32.2°C
💨 Humidity
Humidity:
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer
🪴 Pot & Repot
✂️ Pruning
🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Herb
Life Cycle
Perennial
Genus
Lathraea
Family
Orobanchaceae
Hardiness Zone
5-8
Mature Height
15 cm
Mature Spread
49 cm
Leaf Color
White
Leaf Type
Deciduous
Flower Color
Purple, Violet
Flower Size
3.05 cm to 5.08 cm
Bloom Time
Early spring, Mid spring
Planting Time
Spring, Summer
Harvest Time
Late spring, Early summer
Native Area
Italy, Spain, Belgium, France

Tags (4)

Common Names (2)

en Purple toothwort
en Hidden toothwort