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Field Pennycress

Thlaspi arvense

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Plant Profile

Flowering Months:
Brassicaceae (Cabbage)
Also in this family:
Alpine Pennycress, Alpine Rock-cress, American Wintercress, Annual Wall Rocket, Austrian Yellowcress, Awlwort, Bastard Cabbage, Black Mustard, Bristol Rock-cress, Charlock, Common Scurvygrass, Common Whitlowgrass, Coralroot, Creeping Yellowcress, Cuckooflower, Dame's-violet, Danish Scurvygrass, Dittander, Early Wintercress, Eastern Rocket, English Scurvygrass, Evergreen Candytuft, False London Rocket, Field Pepperwort, Flixweed, Garden Arabis, Garden Candytuft, Garden Cress, Garden Radish, Garden Rocket, Garlic Mustard, Glabrous Whitlowgrass, Gold of Pleasure, Great Yellowcress, Greater Cuckooflower, Greater Periwinkle, Greater Swinecress, Hairy Bittercress, Hairy Rock-cress, Hairy Rocket, Hairy Whitlowgrass, Hedge Mustard, Hoary Cress, Hoary Mustard, Hoary Stock, Hoary Whitlowgrass, Honesty, Horseradish, Hutchinsia, Hybrid Watercress, Intermediate Periwinkle, Isle of Man Cabbage, Large Bittercress, Lesser Swinecress, London Rocket, Lundy Cabbage, Marsh Yellowcress, Mountain Scurvygrass, Narrow-fruited Watercress, Narrow-leaved Bittercress, Narrow-leaved Pepperwort, Northern Rock-cress, Northern Yellowcress, Oilseed Rape, Perennial Rocket, Perennial Wall Rocket, Perfoliate Pennycress, Pinnate Coralroot, Purple Rock-cress, Pyrenean Scurvygrass, Rock Whitlowgrass, Russian Rocket, Scottish Scurvygrass, Sea Kale, Sea Radish, Sea Rocket, Sea Stock, Shepherd's Cress, Shepherd's Purse, Small-flowered Wintercress, Smith's Pepperwort, Steppe Cabbage, Swede, Sweet Alyssum, Tall Rocket, Thale Cress, Tower Mustard, Treacle Mustard, Trefoil Cress, Turnip, Wall Whitlowgrass, Wallflower, Wallflower Cabbage, Warty Cabbage, Watercress, Wavy Bittercress, White Mustard, Wild Cabbage, Wild Candytuft, Wild Radish, Wild Turnip, Wintercress, Woad, Yellow Whitlowgrass
Life Cycle:
Maximum Size:
80 centimetres tall
Fields, gardens, grassland, meadows, roadsides, wasteland.

White, 4 petals
4 white petals, yellow anthers, clustered together in an erect spike at the top of the flower.
The fruits are a distinguishing feature. Each fruit is a heart-shaped, flat, roundish, winged pod with a clearly defined notch at the top. They have a diameter of 2cm's maximum.
The alternate leaves have wavy, or slightly toothed margins. Initially they start from a basal rosette before maturing. The leaf bases clasp their stems.
Other Names:
Bastard Cress, Dish Mustard, Fanweed, Frenchweed, Mithridate Mustard, Penny-grass, Stinkweed, Treaclewort.
Frequency (UK):
Occasionally seen  

Similar Species

Other Information


Thlaspi arvense, also known as field pennycress, is an annual herb that is native to Europe, Asia, and North America. It typically grows to be about 80 cm tall, and has small, white or pale-pink flowers that bloom in the spring and summer. The leaves are deeply lobed and are typically a pale green color. This plant is typically found in disturbed areas such as field margins, roadsides, and waste ground. It is tolerant of a wide range of soil conditions, including acidic, alkaline, and saline soils. It is also known for its ability to tolerate heavy metal pollution, which makes it a useful plant for phytoremediation projects.


Field pennycress (Thlaspi arvense) is a plant species that belongs to the Brassicaceae family. This herbaceous plant is native to Europe and Asia but is now also widely distributed in North America. Field pennycress is commonly found in disturbed areas such as roadsides, fields, and waste places, and it is known for its ability to grow in harsh conditions, including in contaminated soils.

Field pennycress is an annual plant that can grow up to 80 cm tall. Its leaves are oblong or lance-shaped and grow alternately along the stem. The plant produces small, white or pale yellow flowers that bloom from May to July. The flowers are followed by fruits that are flat, round or oval-shaped, and contain small, black seeds.

Field pennycress is known for its potential as a source of biofuel. The plant produces high levels of oil in its seeds, which can be extracted and converted into biodiesel. In addition, field pennycress has been found to have potential as a cover crop. Cover crops are planted to protect the soil from erosion, improve soil fertility, and reduce weed growth. Field pennycress has been shown to have good weed suppression abilities, and its deep roots can help improve soil structure and water retention.

Furthermore, field pennycress has the ability to accumulate heavy metals from contaminated soil, making it a potential candidate for phytoremediation. Phytoremediation is a process where plants are used to remove pollutants from soil or water. This process is a sustainable and cost-effective alternative to traditional remediation methods, which can be expensive and can have negative environmental impacts.

Field pennycress has also been used in traditional medicine to treat a variety of ailments, including bronchitis, rheumatism, and toothache. The plant contains a variety of phytochemicals, including flavonoids, glucosinolates, and saponins, which have been found to have anti-inflammatory, antioxidant, and anti-cancer properties.

Field pennycress is not only valuable for its potential uses, but it also has ecological benefits. As a cover crop, it can help reduce soil erosion and improve soil health by increasing organic matter and nitrogen levels. The plant also attracts pollinators such as bees and butterflies, which are essential for maintaining biodiversity in ecosystems.

In addition to its potential for biofuel production, field pennycress has been studied for its use as a food crop. The plant's leaves and seeds are edible and contain high levels of protein and healthy fats. While not commonly consumed in the Western diet, field pennycress is used as a food crop in some parts of the world, including China and Russia.

The potential of field pennycress as a crop for sustainable agriculture has been recognized by the United States Department of Agriculture (USDA). The USDA is currently funding research on the development of field pennycress as a cover crop and biofuel crop in the Midwest region of the United States. This research includes the evaluation of different cultivars of field pennycress and the development of management practices for its cultivation.

Despite its potential uses and benefits, field pennycress is considered a weed in some regions. The plant has the ability to spread quickly and can compete with native plant species. Therefore, it is important to carefully manage its cultivation and use.

Field pennycress is also a source of valuable chemicals, particularly glucosinolates, which are sulfur-containing compounds that have been shown to have potential health benefits. Glucosinolates are known to have anti-cancer, anti-inflammatory, and antioxidant properties. Studies have also shown that the consumption of foods rich in glucosinolates can help reduce the risk of certain types of cancer, including lung, breast, and colon cancer.

Field pennycress is a promising crop for sustainable agriculture because it requires minimal inputs such as fertilizers and pesticides. The plant is also able to thrive in marginal lands, including soils with high levels of heavy metals and other contaminants, which are not suitable for many other crops. Therefore, the cultivation of field pennycress can help reduce the environmental impact of agriculture and provide an additional source of income for farmers.

Furthermore, the use of field pennycress for phytoremediation can help address the problem of soil and water pollution, which is a major environmental challenge worldwide. Heavy metal pollution is particularly problematic in areas with a history of industrial activities such as mining, smelting, and manufacturing. The ability of field pennycress to absorb heavy metals from contaminated soils and accumulate them in its tissues makes it a promising candidate for the remediation of polluted soils.

In conclusion, field pennycress is a promising plant species with a range of potential uses and benefits. Its ability to produce high levels of oil, serve as a cover crop, and remediate contaminated soils makes it an attractive candidate for sustainable agriculture. Its potential as a food crop, source of valuable chemicals, and ecological benefits further add to its value. However, careful management and regulation are needed to prevent the plant from becoming invasive in certain regions and ensure its safe use for phytoremediation.


Field Pennycress filmed in Orford, Suffolk on the 30th June 2022.


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