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Wavy St. John's Wort

Hypericum undulatum

Please keep in mind that it is illegal to uproot a plant without the landowner's consent and care should be taken at all times not to damage wild plants. Wild plants should never be picked for pleasure and some plants are protected by law.
For more information please download the BSBI Code of Conduct PDF document.

Contents

Plant Profile

Flowering Months:
JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC
Order:
Malpighiales
Family:
Hypericaceae (St. John's Wort)
Type:
Flower
Life Cycle:
Perennial
Maximum Size:
60 centimetres tall
Habitats:
Bogs, fens, fields, grassland, heathland, marshes, meadows, riversides, waterside, wetland, woodland.

Flower:
֍
Yellow, 5 petals
 
Bright yellow flowers, tinged red, 12 to 25mm in diameter. The sepals are black-dotted around their margins. 25 to 40 yellow stamens.
Fruit:
An ovoid capsule, up to 8mm long and 4mm wide. Yellowish-brown seeds.
Leaves:
A perennial flower with wavy-edged oval leaves. The leaves are in opposite pairs up the stems. The leaves have translucent dots.
Frequency (UK):
Unusual  

Other Information

Summary

Hypericum undulatum, also known as Wavy St. John's wort, is a perennial herb that is native to North America. It has small, yellow flowers that bloom in the summer and is known for its wavy-edged leaves. The plant is often found in wetland, meadows, and woodlands, and is valued for its attractive foliage and showy flowers. It is also known for its medicinal properties and has been used traditionally to treat a variety of ailments.

Blog

Wavy St. John's Wort, also known by its scientific name Hypericum undulatum, is a species of flowering plant in the Hypericum genus. This plant is native to eastern North America, and can be found growing in a variety of habitats, including open woods, meadows, and roadsides. In this blog post, we will explore some of the key characteristics and uses of Wavy St. John's Wort.

One of the most distinctive features of Wavy St. John's Wort is its leaves. As its common name suggests, the leaves of this plant have a wavy or undulating edge, which can make them easy to recognize. The leaves are also fairly narrow, and can be up to 3 inches long. The plant produces yellow flowers, which typically bloom from June to August. These flowers have five petals and are about an inch across.

Wavy St. John's Wort has a long history of use in traditional medicine. It has been used to treat a variety of ailments, including depression, anxiety, and nerve pain. The active compounds in the plant are believed to be hypericin and hyperforin, which are thought to have antidepressant and anti-inflammatory properties. While more research is needed to fully understand the effects of Wavy St. John's Wort on the human body, some studies have suggested that it may be effective in treating mild to moderate depression.

In addition to its medicinal uses, Wavy St. John's Wort is also used for landscaping and ornamental purposes. Its bright yellow flowers and distinctive foliage can make it a striking addition to a garden or landscaping project. However, it is important to note that the plant can be invasive in some areas, and may compete with native plant species for resources.

If you are interested in growing Wavy St. John's Wort, it is important to choose a location that receives full or partial sunlight, as the plant does not do well in shade. It also prefers well-draining soil, and can be propagated through seed or stem cuttings. If you are considering using the plant for medicinal purposes, it is important to consult with a healthcare provider before doing so, as the plant can interact with certain medications and may not be safe for everyone.

Wavy St. John's Wort is a fascinating and versatile plant with a long history of use in traditional medicine. Its distinctive leaves and bright yellow flowers make it a beautiful addition to any garden or landscaping project, but it is important to be aware of its potential invasiveness in certain areas. Whether you are interested in growing Wavy St. John's Wort for its aesthetic or medicinal properties, it is a plant that is definitely worth learning more about.

Wavy St. John's Wort is a hardy plant that can tolerate a wide range of soil and environmental conditions. It can grow in both acidic and alkaline soils and is drought tolerant, making it a good choice for areas with hot, dry summers. It is also known to be deer-resistant, which can be an important consideration for gardeners in areas with high deer populations.

While Wavy St. John's Wort is generally considered safe for most people, it is important to be aware of potential side effects and interactions with other medications. Some people may experience side effects such as dry mouth, dizziness, or gastrointestinal distress when taking the plant in medicinal doses. In addition, the plant can interact with certain medications, including antidepressants, birth control pills, and blood thinners. It is important to consult with a healthcare provider before using Wavy St. John's Wort for any medicinal purposes.

Wavy St. John's Wort is a fascinating plant with a rich history of use in traditional medicine. Whether you are interested in growing it for its aesthetic qualities or using it for medicinal purposes, it is a plant that is sure to capture your attention. With its distinctive leaves and bright yellow flowers, it is a beautiful addition to any garden or landscaping project.

In addition to its medicinal and aesthetic uses, Wavy St. John's Wort also has cultural significance in some indigenous communities. For example, the Cherokee people of North Carolina have traditionally used the plant to treat a variety of ailments, including wounds, burns, and snake bites. They also used the plant in ceremonial contexts, such as in the purification of the sweat lodge.

Wavy St. John's Wort has also been the subject of scientific research, which has shed light on its potential medicinal properties. For example, a study published in the Journal of Natural Products found that hyperforin, one of the active compounds in Wavy St. John's Wort, had potent antibacterial activity against a variety of pathogens. Another study published in the Journal of Ethnopharmacology found that a standardized extract of the plant was effective in reducing symptoms of mild to moderate depression in adults.

Despite its potential benefits, it is important to use Wavy St. John's Wort with caution and under the guidance of a healthcare provider. The plant is not regulated by the US Food and Drug Administration (FDA), and there is limited information available about its safety and efficacy. In addition, the plant can interact with certain medications and may not be safe for everyone.

In conclusion, Wavy St. John's Wort is a versatile and fascinating plant with a rich history of use in traditional medicine and cultural contexts. Whether you are interested in its medicinal properties, its aesthetic qualities, or its cultural significance, it is a plant that is sure to capture your attention. However, it is important to use Wavy St. John's Wort with caution and under the guidance of a healthcare provider, particularly if you are using it for medicinal purposes.


Distribution Map

Reproduced by kind permission of the BSBI.

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