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Pigmyweed

Crassula aquatica

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:
Saxifragales
Family:
Crassulaceae (Stonecrop)
Type:
Flower
Life Cycle:
Annual
Maximum Size:
20 centimetres tall
Habitats:
Bogs, ditches, fens, marshes, mud, ponds, saltmarshes, swamps, water, waterside, wetland.

Flower:
֍
White, 4 petals
 
Small, solitary, greenish-white flowers, 1 to 2mm in diameter.
Fruit:
The fruit is a many-seeded, very small follicle.
Leaves:
Small, pointed, opposite leaves, up to 2mm in length. Yellowish-green and tinted red. Annual.
Other Names:
Common Pygmyweed, Dwarf Water Crassula, Water Pygmyweed.
Frequency (UK):
Rarely seen  

Other Information

Summary

Crassula aquatica, commonly known as "Dwarf water Crassula" is a species of aquatic perennial succulent plant in the Crassulaceae family. It is native to South Africa and it is known for its small and compact rosette-shaped leaves that are green or reddish-green. It prefers to grow in shallow water or damp soil, and it's often found in marshes, ponds and other aquatic environments. It can survive in a wide range of light conditions, from full sun to low light, making it a versatile plant. It's not known to have any medicinal use, it's not recommended for any use.

Blog

Pigmyweed, scientifically known as Crassula aquatica, is an aquatic plant that is native to Europe, North Africa, and western Asia. It is a low-growing perennial herb that can grow up to 20 cm in height and is found in shallow water or wet soil. The plant has a sprawling, mat-forming growth habit with small, rounded leaves that are arranged in opposite pairs along the stems. The leaves are succulent and have a bright green color.

One of the most striking features of pigmyweed is its ability to produce tiny, white flowers that bloom in late summer or early fall. The flowers are arranged in dense clusters at the tips of the stems and have a star-like shape with five petals. The flowers are pollinated by bees and other insects, which are attracted to the plant's sweet nectar.

Pigmyweed is an important plant for aquatic wildlife, as it provides shelter and food for many aquatic animals. It is also a useful plant for water purification, as it can help to absorb excess nutrients from the water. This makes it a popular choice for use in aquatic gardens and ponds.

One of the key benefits of pigmyweed is its ease of cultivation. The plant is low-maintenance and can thrive in a variety of conditions. It prefers full sun to partial shade and can tolerate a wide range of soil types, from sandy to clay. Pigmyweed is also highly adaptable to different water conditions, from stagnant to fast-flowing.

Pigmyweed is considered an invasive species in many parts of the world, including the United States, where it is listed as a noxious weed in several states. The plant can quickly spread and outcompete native species, leading to a loss of biodiversity and ecological damage. It is important to be aware of the potential risks associated with pigmyweed and to take appropriate measures to prevent its spread.

In conclusion, pigmyweed is a fascinating and versatile aquatic plant that is well-suited for a variety of purposes, from water purification to garden decoration. While it can be invasive in some contexts, it is a valuable species that deserves our attention and care. By cultivating pigmyweed responsibly, we can help to preserve its ecological and aesthetic benefits for future generations to enjoy.


Facts

Let's delve into some more interesting facts about pigmyweed.

Etymology of the name "Crassula aquatica"

The genus name "Crassula" comes from the Latin word "crassus" which means thick, referring to the plant's thick, succulent leaves. The species name "aquatica" means "of or pertaining to water", which is an apt descriptor for this aquatic plant.

Pigmyweed as a medicinal plant

In traditional medicine, pigmyweed has been used to treat a variety of ailments, including stomach ulcers, rheumatism, and skin conditions. It is also believed to have antiseptic and diuretic properties. However, it is important to note that the medicinal use of pigmyweed has not been extensively studied, and its safety and effectiveness have not been confirmed.

Pigmyweed in folklore

In Irish folklore, pigmyweed was believed to have the power to ward off fairies and evil spirits. It was also used in love divination, with young women placing the plant under their pillows to dream of their future husbands.

Pigmyweed and climate change

As an aquatic plant, pigmyweed is particularly vulnerable to changes in water availability and quality. With the increasing threat of climate change, the plant's habitat and distribution may be impacted, leading to potential declines in population size and diversity.

Pigmyweed and other Crassula species

Pigmyweed belongs to the Crassula family, which includes over 350 species of succulent plants. Some other notable members of the family include the Jade Plant (Crassula ovata) and the String of Pearls (Senecio rowleyanus). These plants are also prized for their ornamental value and low-maintenance care requirements.

Overall, pigmyweed is a unique and versatile aquatic plant with many interesting characteristics and uses. Whether you are a gardener, a naturalist, or a curious observer, there is much to appreciate and discover about this fascinating plant.


Blog Continued

Pigmyweed, also known as Crassula aquatica, is an aquatic plant that has been known for its ornamental value and ecological benefits. It is native to Europe, North Africa, and western Asia, and is found in shallow water or wet soil. The plant is a low-growing perennial herb that can grow up to 20 cm in height and has small, rounded leaves that are arranged in opposite pairs along the stems. Its leaves are succulent and have a bright green color, and it can produce tiny, white flowers that bloom in late summer or early fall.

Pigmyweed is an important plant for aquatic wildlife, as it provides shelter and food for many aquatic animals. It is also a useful plant for water purification, as it can help to absorb excess nutrients from the water. This makes it a popular choice for use in aquatic gardens and ponds.

One of the key benefits of pigmyweed is its ease of cultivation. The plant is low-maintenance and can thrive in a variety of conditions. It prefers full sun to partial shade and can tolerate a wide range of soil types, from sandy to clay. Pigmyweed is also highly adaptable to different water conditions, from stagnant to fast-flowing.

Despite its benefits, pigmyweed is considered an invasive species in many parts of the world, including the United States, where it is listed as a noxious weed in several states. The plant can quickly spread and outcompete native species, leading to a loss of biodiversity and ecological damage. It is important to be aware of the potential risks associated with pigmyweed and to take appropriate measures to prevent its spread.

In traditional medicine, pigmyweed has been used to treat a variety of ailments, including stomach ulcers, rheumatism, and skin conditions. It is also believed to have antiseptic and diuretic properties. However, it is important to note that the medicinal use of pigmyweed has not been extensively studied, and its safety and effectiveness have not been confirmed.

As an aquatic plant, pigmyweed is particularly vulnerable to changes in water availability and quality. With the increasing threat of climate change, the plant's habitat and distribution may be impacted, leading to potential declines in population size and diversity.

Overall, pigmyweed is a unique and versatile aquatic plant with many interesting characteristics and uses. Whether you are a gardener, a naturalist, or a curious observer, there is much to appreciate and discover about this fascinating plant. While it is important to be mindful of its potential invasiveness, pigmyweed remains an important contributor to aquatic ecosystems and a valuable resource for those interested in aquatic gardening and conservation.


Distribution Map

Reproduced by kind permission of the BSBI.

Click to open an Interactive Map