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Common Toothwort

Lathraea squamaria

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Plant Profile

Flowering Months:
Orobanchaceae (Broomrape)
Life Cycle:
Maximum Size:
20 centimetres tall
Hedgerows, riverbanks, riversides, waterside, wetland, woodland.

Pink, 5 petals
An annual parasitic plant which lives off the roots of other woody plants. It feeds on and grows mainly beneath Hazel trees but also many other trees such as Walnut, Sycamore, Elm, Alder, Ash, Lime and Beech. Toothwort lacks chlorophyll and the flower is a creamy pink colour with mauve-coloured petals. The Toothwort flower droops to one side. 4 stamens.
The fruit of toothwort, known as a silicle, is a small, elongated pod typically found in clusters. When mature, it splits open along two sides to release the seeds contained within. These silicles often resemble tiny elongated capsules and can vary in color from green to brown depending on maturity.
The leaves of toothwort are typically described as being basal, meaning they form a rosette at ground level. They are often deeply lobed or divided, giving them a fern-like appearance. Toothwort leaves are usually smooth or slightly hairy, and their shape can vary depending on the species, but they are generally ovate to lanceolate. The edges of the leaves may have toothed or serrated margins, hence the plant's common name. Overall, toothwort leaves have a vibrant green coloration and a delicate texture.
Toothwort typically does not possess a noticeable fragrance. It is primarily valued for its ornamental qualities rather than its scent. While some plants may have a faint, earthy aroma, it is generally not a defining characteristic of toothwort.
Frequency (UK):

Similar Species

Other Information


Lathraea squamaria, also known as the toothwort, is a perennial, parasitic flowering plant in the Orobanchaceae family. It is native to Europe and western Asia and typically grows in woodlands or along streams. It lacks chlorophyll and thus cannot produce its own food via photosynthesis. Instead, it attaches its roots to the roots of nearby trees and shrubs, from which it absorbs nutrients. The plant produces small, inconspicuous flowers and has small, scale-like leaves. It is often overlooked as it flowers underground, and is not well known by the general public. It can be propagated by seed, but it's not commonly cultivated as it's difficult to grow in a garden setting and it's not used in horticulture.


Common Toothwort (Lathraea squamaria) is a fascinating plant that is part of the Orobanchaceae family. It is native to the woodlands of Europe and western Asia, and is known for its unique method of obtaining nutrients. This plant is parasitic, meaning that it relies on other plants for survival, and it is specifically known to parasitize the roots of various species of willow trees.

The plant is also referred to as the “toothwort” because of its tooth-like structures that grow on its roots. These structures, called haustoria, penetrate the roots of its host plant and allow the common toothwort to extract nutrients and water.

One of the most interesting features of the common toothwort is that it has no chlorophyll, which is the pigment that most plants use to photosynthesize and create their own food. Because of this, the common toothwort relies entirely on its host plant for sustenance.

In appearance, the common toothwort is a small, perennial plant that grows to a height of approximately 20 cm. It has a fleshy, pinkish-brown stem and small, white, lipped flowers that bloom in the spring. These flowers are pollinated by various species of flies and beetles, and the plant then produces small, brown, bean-like seeds that can be dispersed by wind.

The common toothwort is considered to be a scarce species in many parts of its native range, and it is considered to be endangered in some areas due to habitat destruction and changes in land use. Despite this, it is not currently listed as a protected species, and conservation efforts are ongoing to help preserve and protect populations of this unique and fascinating plant.

The common toothwort is a remarkable plant that is a great example of the intricate relationships that exist in the natural world. Its unique method of obtaining nutrients and its dependence on other plants for survival make it a fascinating subject for study and a valuable component of the woodland ecosystem.

The common toothwort is also of great interest to botanists, ecologists, and naturalists due to its life cycle and relationship with its host plants. The plant spends most of its life underground, attached to the roots of its host plant, and it only emerges above ground to produce its flowers and seeds.

This parasitic relationship between the common toothwort and its host plant is an example of mutualism, where both species benefit from the relationship. The host plant provides the common toothwort with the nutrients and water it needs to survive, while the toothwort in turn helps to provide essential nutrients and water to the host plant by increasing its surface area for nutrient uptake.

The common toothwort is also an important food source for various species of insects, including bees, butterflies, and moths. The nectar and pollen produced by the plant's flowers provide a valuable food source for these insects, which in turn play an important role in pollination and seed dispersal.

Aside from its ecological importance, the common toothwort has also been used for medicinal purposes for centuries. The plant has been used as a remedy for various ailments, including indigestion, toothache, and skin irritations. While there is little scientific evidence to support these claims, it is a testament to the plant's historical significance and cultural value.

The common toothwort is a fascinating and valuable plant that plays a critical role in the woodland ecosystem. Its unique relationship with its host plants, its importance as a food source for insects, and its historical significance make it a valuable subject for study and preservation. Conservation efforts to protect and preserve populations of this plant are ongoing, and it is essential that we continue to support these efforts to ensure its survival for future generations.

In addition to its ecological and cultural significance, the common toothwort is also of great interest to botanists due to its unique biology and life cycle. Unlike most plants, which produce seeds and then sprout new plants, the common toothwort relies on its seeds to produce a new generation of plants each year.

This is because the plant has a very short above-ground growing season, and its seeds need to germinate quickly in order to establish a connection with a host plant before the growing season ends. The young plant then spends the rest of the year attached to the roots of its host plant, extracting nutrients and water until it is ready to emerge the following spring.

Another interesting aspect of the common toothwort's biology is its ability to adapt to different host plants. While the plant is most commonly found attached to the roots of willow trees, it has also been known to parasitize the roots of other tree species, such as poplars and birches. This adaptability allows the plant to thrive in a wide range of habitats, from moist, marshy woodlands to dry, rocky hillsides.

Despite its adaptability, however, the common toothwort is considered to be vulnerable in many parts of its native range. Changes in land use, including deforestation, agriculture, and urbanization, have resulted in the loss of much of its habitat and its decline in many areas. Additionally, the widespread use of pesticides and herbicides can also have a negative impact on the plant, as it relies on its host plant for survival.

Conservation efforts to protect and preserve the common toothwort and its habitat are ongoing, and include the preservation of existing woodland habitats, the restoration of degraded habitats, and the planting of new woodland habitats. Additionally, research into the plant's biology and ecology is ongoing, which will help to better understand its life cycle and relationship with its host plants and other woodland species.

In conclusion, the common toothwort is a fascinating and valuable plant that is essential to the health and diversity of the woodland ecosystem. Its unique biology and life cycle, as well as its importance as a food source and habitat for other species, make it a valuable subject for study and preservation. Ongoing efforts to protect and conserve populations of this plant will help to ensure its survival for future generations.


Video 1: Common Toothwort filmed in Sedgwick, Cumbria on the 3rd April 2023.


Video 2: Toothwort filmed at Howe Ridding Wood in Cumbria on the 30th April 2023.


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