Saturday, October 18, 2025

Polaris of Enlightenment

Spring greens from the Nordic pantry

Published 18 May 2025
– By Editorial Staff
Wood sorrel takes many Swedes back to childhood.
8 minute read

Many people remember the sour taste of wood sorrel, or how dewdrops filled the grass on the lawn in the morning, but over the years they have forgotten that these plants are actually edible. In the forest, on the lawn, and even in the city, there are lots of herbs and other plants that can be eaten during the green season in spring.

However, it is important to remember that Nordic plants can often be poisonous, so you should never eat anything you are unsure about.

The darkness is receding and light is returning to the Swedish landscape. With light, sun, and more warmth, the earth is slowly thawing and the leaves are spreading their buds. The green leaves are not only a delight that brings spring feelings, but also contain a lot of edible plants. In Sweden, there is plenty to eat in nature besides the well-known lingonberries and the wide variety of mushrooms that attract people to the forest. There are also weeds, trees, bushes, and flowers. In this article, we take a look at some of the edible herbs and leaves of spring.

In Sweden, the forest is there for everyone through the right of public access, but you should always respect both the landowner and nature. For some things, such as trees, you need the landowner’s permission to pick, and you should not pick more than you will use. It is also important to think carefully when you are in the forest, as it is easy to get lost.

Many edible plants are found not only in forests but also in cities, but you should always avoid picking them along roads due to exhaust fumes. If necessary, you can use Stans Flora to learn how to recognize different plants. It is important to remember never to eat anything you are not sure about, as there are many poisonous plants in Sweden that can have disastrous consequences if ingested. Read up, look carefully, and never guess.

Blueberry leaves (Vaccinium myrtillus)

Harvest: May to June

Most people know that blueberries are edible, but not everyone knows that the leaves are edible too. Blueberries themselves are very healthy, but the leaves also have many beneficial qualities. Among other things, they contain flavonoids, which act as effective antioxidants, as well as neomyrtelin, which is said to be good for type 2 diabetes, according to Läkeörter.se. The leaves contain vitamin C and chromium.

The best way to use blueberry leaves is to make a decoction, i.e., tea. Fresh leaves are perfectly fine to use, but you can also dry them and use them during the winter. Blueberry leaf tea is said to counteract diarrhea and stomach problems, as well as have blood sugar-lowering properties and be good for urinary tract problems.

Pick the leaves before the berries appear. Photo: Ann-Sophie Qvarnström/Public Domain

Shepherd’s purse (Capsella bursa-pastoris)

Harvested: April to November

The plant has a slender stem with white flowers and grows in meadows. Along the stalk there are fruit pods that are slightly heart-shaped. It is one of the most common weeds and is found throughout Sweden, except in the mountains.

You can eat the whole plant, except the root. It is said that the shepherd’s purse was already used as food in the Stone Age.

The fruit pods in particular have a taste reminiscent of ginger and mustard. The young leaves can be used in salads, or they can be dried and used later in cooking. One tip is to make spiced butter from the unripe fruit pods.

The shepherd’s purse is said to have a hemostatic, bactericidal, anti-inflammatory and vasoconstrictive effect, making it effective in wound care. It can be dried and powdered, for example, and then used and sprinkled directly on wounds to stop bleeding.

It is also high in iron, calcium, vitamin K and vitamin C. It can be confused with the field pennycress, but it is also edible. It is also said to have been used against chills in the past.

Avoid eating it during pregnancy and if you have problems with kidney stones or kidney disease.

Shepherd’s purse. Photo: Andreas Rockstein/CC BY-SA 2.0

Wood sorrel (Oxalis acetosella)

Harvested: April to October

This classic herb likes to grow in wetter woods and has three heart-shaped leaves that resemble clover. Both flowers and leaves can be eaten. Its flowers, however, are similar to those of wood anemone, which is poisonous to eat, but the difference is that wood anemone flowers have white seed stalks and pink veins. Both also flower around the same time in May. So look carefully to make sure it’s not an accidentally picked-up wood anemone, especially if children are around.

The wood sorrel is often called the barometer of the forest because it sheds its leaves when it rains.

The herb has a sour taste, which comes from the poison oxalic acid. However, eating foods with oxalic acid is not toxic, but you should not eat large amounts (which is difficult to do with resin acid). If you suffer from kidney stones, you should not eat anything with oxalic acid in it. The acidic taste is suitable as a flavor enhancer in sauces or salads, for example. It is also good in desserts or mixed in water for a mealtime drink. Or why not go for a snack on your walk?

It grows throughout Sweden, except in northernmost Norrland.

Wood sorrel. Photo: Tero Karppinen/CC BY 2.0

Lady’s mantle (Alchemilla vulgaris)

Harvested: May to July

Perhaps as a child you used to pick lady’s mantle from the lawn and drink the morning dew that collected, if nothing else, the common plant is probably recognized by most people. It is found throughout Sweden and is common, in addition to lawns, also in meadows. It can also be found in the forest.

The leaves are bowl-shaped and it has small yellow-green flowers.

The name Alchemilla comes from the belief that the water droplet formed in the plant’s bowl was an important ingredient for alchemists.

Traditionally, the plant has been used as a medicinal herb and is said to be good to drink during pregnancy. It is also said to have been used after childbirth as the tannins in the plant can help tighten the skin, so it has also been used as a compress for wound healing. For this reason, it is also said to be beneficial to drink lady’s mantle decoction during heavy menstruation.

It has also been called “a woman’s best friend” as it is said to be good for facilitating regular menstruation and also relieving menopausal symptoms.

It also contains essential oils and saponins, which together with the tannins can prevent chapped skin.

Both leaves and flowers can be eaten. Cut off the leaves at the base and the plant will continue to grow. Dry and use as a tea, or as a salad topper. Make a decoction and then use as an astringent toner.

Lady’s mantle. Photo: Alexandre Dulaunoy/CC BY-SA 2.0

Birch leaves (Betula spp.)

Harvested: May to June

The white-black tree is easy to recognize. In spring, the leaves start to bud on the tree and this is when they are best to pick. Birch leaves are useful both internally and externally.

Birch leaves have long been used to give the body an extra boost after winter. The leaves can be used as a tea and provide a range of benefits to the body. Among other things, they are said to be high in vitamin C, but also to help support the kidneys and clear waste products from the body. The leaves are also said to be anti-viral and anti-inflammatory, and good for rheumatism.

Furthermore, you can also make an infusion of the leaves and use it as a toner, which is supposed to help clearer skin. It is also said to be good for eczema. Why not take a bath with birch leaves to benefit the whole body?

If you want to try a natural shampoo or household cleanser, mix a liter of water with a deciliter of fresh leaves. Leave for 24 hours, stirring occasionally. After that, you can strain the leaves and it should have created a form of soap. You can use this for your hair or to scrub with.

Photo: Bengt Littorin/ CC BY 2.0

Stinging nettle (Urtica dioica) and whitetop (Lamium album)

Harvested: March to August

Stinging nettle is found throughout Sweden, grows a little everywhere and should be picked with gloves because it burns. It can be picked as a shoot but also as a fully grown plant.

The plant is very rich in vitamin C and is relatively rich in protein. It also contains iron, calcium, phosphorus, silicon, manganese and sulphur.

However, do not pick stinging nettles on nitrogen-fertilized soil or near manure gardens. Nettles have the ability to store nitrates which can be harmful to eat in large quantities.

It can be used as spinach in hot dishes and can also be dried and used as tea. The seed pods can also be picked and dried, which can be added to muesli for extra energy. Nettle soup is also a popular dish.

The white dead-nettle is very similar to the stinging nettle, except that it has white or red flowers (red thistle). However, it has no stinging hairs. It’s also a very common plant and you can eat both its leaves and flowers. Making tea from the flowers is said to be particularly good and tastes sweet and toffee-like. It is common for children to suck nectar from the flowers.

Stinging nettle and white dead-nettle. Photo: Andreas Rockstein/CC BY-SA 2.0

Water avens (Geum rivale)

Harvested: April to October

The herb is said to have gotten its Swedish name humleblomster (bumblebee flower) because the flower mimics the hindquarters of a bumblebee. The flower grows throughout the country and is part of the Dianthus genus, which means it can be confused with carnation, which is not poisonous. Carnation, on the other hand, has yellow flowers, while hop flowers are more purple-brown in color. It usually grows in wetter areas. The root, which is best picked in spring, has a sweetish flavor and can be used to make a chocolatey drink by peeling the root and placing it in a saucepan filled with water. Bring to the boil, then remove from the pan and leave to stand for 20 to 30 minutes, then strain out the roots and add sugar and hot milk. The shoots can be eaten fresh and the flowers are great for decorating salads, for example. The leaves can be added to a soup or used in stews.

Traditionally, a decoction of the root has been used internally for chills, fever, diarrhea, and intestinal and stomach issues. Externally, it has been used to treat various skin conditions such as blotchy skin, acne, and freckles. In folk medicine, the root has also been used for its anti-inflammatory, antiseptic, and astringent properties.

Water avens. Photo:Thibault Lefort/Public Domain

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Finnish city tests forest microbes in playgrounds to boost children’s health

Biodiversity

Published yesterday 7:18
– By Editorial Staff
The sandbox consists of fallen trees filled with sand and humus. If the test succeeds, the concept could be expanded to more playgrounds.
2 minute read

A new type of sandbox has been installed in Kupittaa Park in Turku, Finland. Instead of regular sand, it contains soil from the forest floor filled with microorganisms that, according to research, strengthen children’s immune systems.

The city of Turku is now taking a unique step to counteract health problems in children growing up in urban environments. In Kupittaa Park, the country’s first sandbox has been built that mixes traditional play sand with humus and microbes from the forest.

The initiative is based on research from the Natural Resources Institute Finland, the University of Helsinki, and Tampere University, which shows that exposure to forest microbes improves the regulation of children’s immune systems.

The study showed that children who played in sand enriched with forest soil exhibited improved immune regulation. The discovery is particularly important because urban children are increasingly affected by immune-related diseases such as allergies, asthma, atopy, and type 1 diabetes.

The cause is linked to the fact that city children have limited contact with the diversity of microorganisms found in nature.

Follow-up will determine the future

The new play box is constructed from logs – naturally fallen trees – and filled with a mixture of sand and humus from the forest floor. The design is deliberately simple so it can be replicated if the concept proves successful.

— I became enthusiastic about the Natural Resources Institute’s research showing that sand mixed with soil containing microbes from the forest improved children’s resistance. I thought the box would be easy to test at a playground in the city. Based on user experiences, we will assess whether such a play box could be implemented on a larger scale, says Anna-Kaisa Hatakka, responsible project manager at the City of Turku, in a press release.

The city will now monitor how popular the new play box becomes among children and parents. If the project succeeds, it could mean a new direction for Turku’s playgrounds, where in recent years rubber mats have increasingly been chosen over natural surfaces such as grass and gravel.

PFAS levels declining in Sweden’s major lakes

Published 10 October 2025
– By Editorial Staff
PFAS levels have been measured in fish from Lake Vättern, Lake Vänern, and Lake Mälaren, three of Sweden's largest lakes.
2 minute read

Bans on dangerous PFAS substances have shown results in Sweden’s major lakes. However, levels still remain above limit values in Lake Vättern.

PFAS are environmental toxins often called “forever chemicals” because they break down very slowly and therefore accumulate in soil, water, animals and even humans.

Certain PFAS substances can be harmful to humans, with several studies having pointed to their potential to cause cancer, liver damage, impaired reproductive ability, intestinal diseases and thyroid disorders, among other health issues.

It was recently discovered that Swedish wild animals have unusually high levels of these substances, with forest voles among others likely suffering liver damage due to the forever chemicals.

Decreased since the 2000s

In a new study conducted by the Swedish Museum of Natural History, commissioned by the Water Conservation Associations, researchers measured the occurrence of these substances in fish in Swedish lakes. This was done using samples from the museum’s environmental sample bank, which dates back to the early 1970s.

The results show that PFAS levels have generally decreased in Swedish lakes. In Lake Mälaren and Lake Vänern, levels have decreased since the early 2000s, and in Lake Vättern since 2008.

Problems remain

The reason for the decrease is believed to be the international banning of the most well-known PFAS substances. However, Arctic char in Lake Vättern still exceed the Water Framework Directive’s limit value for PFOS, one of the PFAS substances that has been banned.

Our results show that measures and bans have had an effect, but also that the PFAS problem is far from solved, says Suzanne Faxneld from the Environmental Analysis and Research unit at the Swedish Museum of Natural History, in a press release.

Stricter limit values for these chemicals are now being discussed in the EU. If these are implemented, Faxneld believes that Sweden’s major lakes will exceed the new limit values. The study shows that preparations should be made for stricter regulations from the EU.

It’s also very important to prevent these substances from entering the environment in the first place, she says.

Conservation or animal cruelty? Denmark’s rewilding projects under fire

Biodiversity

Published 5 October 2025
– By Editorial Staff
At the rewilding project Saksfjed Wilderness in Denmark, Galloway cattle, Exmoor horses and Tauros cattle graze freely year-round.
6 minute read

Restoring nature means letting it return to the wild – releasing control and allowing natural processes to develop. In Denmark, cattle and horses graze freely year-round as part of ambitious rewilding projects to recreate original ecosystems.

However, the method has created a difficult balancing act: while the projects demonstrably benefit biodiversity, they draw strong criticism from animal welfare organizations who argue that the animals are subjected to unnecessary suffering.

Knutshoved Odde is a 30-kilometer-long peninsula located near Vordingborg, about 90 kilometers southwest of Copenhagen, Denmark. The area was formed during the Ice Age and consisted until the 1800s of natural pastures, water holes, and wetlands – as evidenced by historical maps. Since then, large parts have been converted to agricultural land through drainage, stone removal, and filling of natural depressions in the landscape.

The rewilding project LIFE Clima-Bombin, which started in 2019, primarily aimed to restore the natural environment that previously existed, and then preserve it – something they have now succeeded in doing. This was made possible with funding from the EU’s LIFE fund and the Danish Environmental Protection Agency. To restore the natural lands, they began by recreating the landscape from the ground up. Agricultural land has been transformed by replacing large quantities of stones and sowing seeds with wild grassland species.

We want to recreate what we call ‘The Old Country’. That is, the landscape as it looked before 1800, when the medieval landscape contained water holes, pastures, and large, scattered oaks. Denmark was intensively grazed for 6,000 years until the king sold his land. At the beginning of the 19th century, everything changed to agriculture and dark forests. And then almost all our biodiversity disappeared, said Peer Ravn, who is a partner in the project, to the Danish Society for Nature Conservation in 2023.

The biggest change occurred when they removed the pumps that had drained the land, and now six islands have emerged after restoring the water areas. To create more biodiversity, they also have cattle and horses grazing in the areas year-round.

Now nature has returned to Knutshoved Odde. The area, which was previously poor in plants, now blooms colorfully in summer. Since the wetlands were restored, more and more breeding birds have arrived each year. The area is also an important habitat for all species of Denmark’s endangered amphibians, whose habitats were previously threatened by flooding. Now the frogs have better conditions with the restored water holes.

The agricultural land has now returned to its former state – by recreating the land and letting nature have free rein, it has relatively quickly taken hold again, where biodiversity now flourishes.

At Saksfjed Vildmark, cattle graze freely. Photo: Saksfjed Vildmark/FB

Domesticated grazing animals

The grazing animals are a central part of nature restoration as they perform so-called “natural disturbances” similar to those that existed when more large grazing animals lived freely in Europe. The Knutshoved Odde area is a completed and successful project where grazing animals were used, but far from the only rewilding project in Denmark.

The Saksfjed Vildmark project is an ongoing and relatively new project – started in 2023. It is an 800-hectare area in southern Lolland, which here too was previously agricultural land. There they have restored wetlands, sown wild species, and also introduced grazing livestock and horses.

The area is a Natura 2000 area and is described as one of the largest rewilding projects underway in Denmark. The agricultural land is gone and now the site is rich in species and biodiversity, something they claim has been made possible largely by the grazing animals.

At Saksfjed Vildmark today there are Galloway cattle, Exmoor horses, and Tauros cattle. They graze down the vegetation and thereby prevent overgrowth, trample up soil, and promote biodiversity.

Even if we don’t see the animals, we can see that they have been here. They have made a path through this former reed sea. The horses have scratched themselves on this birch, they have scraped with their hooves on the ground so that sandy patches have formed, and they have grazed off the green leaves up to over a meter’s height, which creates a semi-open landscape, explains Jens Thorvig Andersen, who is a nature interpreter at the area, for Naturpodden.

Since ecological conditions have changed over the past hundred years, carbon dioxide and nitrogen emissions have also increased dramatically. This means that larger and faster-growing plants take over the landscape, such as grass, thistles, and nettles. But when large animals graze, it affects the landscape and gives small plants greater advantages to flourish.

Starving animals are shot

There are more ongoing rewilding projects in Denmark where grazing animals are used to promote biodiversity. The animals are allowed to live completely freely within fenced areas and often receive no supplementary feed, which in practice means they must fend for themselves. The animals also don’t have the same supervision requirements normally required and live essentially their lives outside human hands – who only check on them from a distance.

This has sparked strong criticism, particularly against the Mols Laboratory, which is a kind of field laboratory in Mols Bjerge National Park in southeastern Jutland, Denmark. There, since 2016, they have let livestock and horses roam freely year-round in a rewilding project, but it hasn’t gone entirely smoothly.

During 2023, starvation among the animals was reported and that the food available in nature simply wasn’t sufficient. A large part of the vegetation is also toxic to horses and cattle, such as ragwort.

All animals at risk of starving to death were shot instead – a total of 67 percent of the animals between 2019-2020.

At the Mols Laboratory, the animals never get older than six years, said equine veterinarian Lotte Bøgedal to Djurskyddet (Swedish animal welfare magazine) in 2023.

It is primarily the Mols Laboratory that has received strong criticism regarding its grazing wild-living animals, and it’s unclear whether all rewilding projects have exactly the same conditions for the animals. However, a common component seems to be that the animals take care of themselves, without supplementary feeding, year-round.

Horses grazing freely in August this year at the Mols Laboratory. Photo: Molslaboratoriet/FB

Animal welfare or nature conservation

All these nature restoration projects in Denmark can see clear benefits from the year-round grazing animals in the form of rich and varied nature that has re-emerged – but the animal welfare issue becomes complex and challenging, especially in a society where animal rights carry increasing weight. Risk of starvation and suffering cannot be ruled out when animals live essentially as wild animals, but at the same time they cannot be classified as wild since they are both fenced and domesticated.

It simply becomes an animal welfare law issue, since in practice it would be illegal for, for example, a private person to keep animals in a similar way. Denmark has animal welfare laws, including that animals’ needs must always be met, which includes access to food. However, they passed a new law in 2021 that can allow animals living fenced in national parks to “regulate their population naturally according to food availability.” To implement the law, however, one must apply for an exemption from the animal welfare law. According to Bøgedal, the field laboratory had at least not received such an exemption in 2023.

Morten DD Hansen, who works at the Mols Laboratory, believes the criticism is not “unexpected” but nevertheless points out that it is not illegal to keep animals as they do at the field laboratory.

Many people feel sorry for the animals, but we prioritize letting the animals live as wildly as possible and interact with the varied nature as unregulated as possible. Research is conducted on the animals’ behavior and when this work is finished it will naturally be published”, he writes to Djurskyddet.

Reintroduction of wild animals

In Sweden and other parts of Europe, work has been done to reintroduce European bison in forests for nature conservation purposes. The idea is that it should benefit biodiversity by, among other things, counteracting overgrowth and creating habitats for many endangered species. In Sweden, the reintroduction is still in a preliminary study phase.

The difference there, however, is that European bison are a wild species that previously existed in Swedish forests, while the animals kept free in Denmark are domesticated animals. Arguments from an animal welfare perspective can therefore be that bison are created for the wild, while the other animals are too domesticated to fend for themselves. Additionally, Sweden is considering supplementary feeding of the bison initially to reduce the risk of starvation.

Despite the criticism, Danish rewilding projects continue to develop successfully. While the results for biodiversity are clearly positive, the challenge remains of how animal welfare should be guaranteed in these semi-wild environments. The debate reflects a larger discussion about where the line is drawn between nature’s own processes and human responsibility for the animals that humans once domesticated.

Finland’s wolf population grows dramatically

Biodiversity

Published 1 October 2025
– By Editorial Staff
Wolves have been observed in new locations, primarily in southwestern Finland.
1 minute read

Finland’s wolf population increased markedly last year – significantly more than in previous years. The largest growth occurred in the western parts of the country.

In March last year, the number of wolves in Finland was estimated at 295 individuals. By March this year, the figure had grown to 430. The numbers are estimates based on recorded observations, DNA monitoring, and data on wolf mortality. The number of wolves could therefore be between 413 and 465 individuals.

The number of individuals has grown by a full 46 percent compared to last year, so it’s a really dramatic increase, says researcher Mia Valtonen at the Finnish Natural Resources Institute to Yle.

The wolf population has increased mainly in western Finland, particularly in the southwestern parts. However, wolves have been observed in significantly larger areas than before, even in places where they have never been seen previously.

In Scandinavia, the wolf has long been considered threatened and has had strong protection, but in May the EU Parliament approved a downgrading of the wolf’s protection status. This means that population management hunting could now be permitted in Finland, something that Finnish Minister of Agriculture and Forestry Sari Essayah has strongly advocated for.

Without population management hunting, the number of wolves is calculated to increase to 557 individuals in November and 436 in March next year. With population management hunting, there would of course be fewer, says Samu Mäntyniemi, leading researcher at the Natural Resources Institute.

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