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Bupleurum rotundifolium

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.
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Plant Profile

Flowering Months:
Apiaceae (Carrot)
Life Cycle:
Maximum Size:
60 centimetres tall
Fields, gardens, grassland, meadows, roadsides, wasteland.

Yellow, 5 petals
Yellowish-green flowers which appear in umbels. Insect pollinated.
The fruits are warty and ridged. The seeds ripen in July and August.
An erect, many-branched annual flower with roundish leaves and red-tinted stems. The stems go through the leaves. The lower leaves are more rounded than those of the similar looking False Thorow-wax (Bupleurum subovatum).
Other Names:
Common Hare's Ear, Forcible Plant, Hound's-ear, Narrow-leaved Thorough-wax, North American Modesty Plant, Round-leaved Bupleurum, Round-leaved Hare's Ear, Round-leaved Thorow-wax, Thorough-wax, Thoroughwort.
Frequency (UK):

Similar Species

Other Information


Bupleurum rotundifolium, also known as round-leaved thorow-wax or round-leaved hare's ear, is a perennial herb native to Europe and Asia. It is typically found in grassland, meadows, and disturbed areas such as roadsides and pastures. The plant has a tall, spiky stem and produces small, yellow flowers. It is considered a weed and invasive in some areas, but it is also cultivated as an ornamental plant in gardens. Bupleurum rotundifolium has been traditionally used for medicinal purposes, such as for treating liver and gallbladder complaints. Additionally, the root of the plant can be eaten and used as a vegetable, and the leaves can be used as a tea.


Thorow-wax, also known as Round-leaved Bupleurum (Bupleurum rotundifolium), is a beautiful wildflower that is native to many parts of Europe, Asia, and North Africa. This plant belongs to the Apiaceae family, which is also known as the carrot family, and is a popular choice for gardeners and wildflower enthusiasts alike.

The Thorow-wax plant is known for its delicate and lacy appearance, with small, round leaves and clusters of yellow flowers that bloom in the summer. The plant grows to a height of about 30-60 cm, making it an excellent choice for borders, rock gardens, and wildflower meadows.

One of the most appealing features of Thorow-wax is its hardiness and low maintenance requirements. It is a very adaptable plant that can grow in a wide range of soils and conditions, including dry and rocky soils, making it an ideal choice for gardeners who want a low-maintenance garden. The plant also has the ability to self-seed, so once it is established, it can spread and create beautiful displays of yellow flowers for years to come.

Thorow-wax is also an excellent choice for butterfly and bee gardens, as it is a popular food source for these pollinators. The plant's small yellow flowers are a great source of nectar, and the plant provides an important source of food for bees and other insects at a time when other food sources are scarce.

In addition to its beauty and hardiness, Thorow-wax has been used for centuries in traditional medicine for a variety of purposes. It has been used to treat digestive problems, including indigestion and flatulence, as well as to soothe the symptoms of colds and flu. The plant is also thought to have mild pain-relieving properties, making it an excellent choice for people who are looking for a natural alternative to over-the-counter pain relievers.

In conclusion, Thorow-wax is an attractive and versatile wildflower that is ideal for gardeners and wildflower enthusiasts alike. It is a hardy plant that is easy to grow and care for, making it an excellent choice for those who want a low-maintenance garden. With its delicate appearance, nectar-rich flowers, and traditional medicinal uses, Thorow-wax is a plant that is sure to be appreciated by all.

Distribution Map

Reproduced by kind permission of the BSBI.

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