11 Taiga Plants Flourishing In Boreal Forests

Taiga plants grow in one of the giant biomes, the boreal forest, which makes them some of the toughest plants in the world. The boreal forests contain many species that brave the long and extremely cold winter, which lasts nine months. Winter days are short, while summer days are longer. 

The harsh climate and soil conditions make us wonder how taiga evergreen trees and vegetation survive. The article discusses the definition of the boreal forest, plant adaptations that enable the survival of taiga plants in the cold conditions in northwest territories, and 11 taiga closed canopy forest plants.

Table of contents:

What is the taiga biome?

The taiga biome, also called the boreal forest, is a forest ecosystem in the boreal region in the northern hemisphere. It is one of the most extensive forests in the world, covering 50 million acres. It stretches across North America, Asia, and Europe, with its boundaries meeting at the arctic tundra¹.

The North American taiga forest starts in Labrador and reaches Alaska. Canada contains 24% of the world's boreal forest, while the United States holds 11%. The biome extends more than 1200 miles from north to south. The European and Asian boreal forests start in Siberia and stretch across Scandinavia and western Russia.

Russia has 50% of the world's taiga biome, while Finland, Sweden, and Norway have 4%. China and Mongolia have 3%. Boreal forests contain bogs, fens, marshes, and lakes. Because the forest is below the arctic tundra, the cold climate lasts from October to May. 

The coldest temperatures in a boreal forest are -65°F, with annual snowfall ranging from 16 to 39 inches. Summers in the taiga are short. Temperatures are between 20° and 70° F, but they can be over 80° F on some days. The forest sits on permanently frozen soil.

How do the boreal forests support taiga plants?

How does the boreal forest support plant life with its harsh climate conditions? 

The soil in this type of forest is podzols, which is spodosol under the United States soil classification system. Podzols develop in the taiga region because the colder climate slows the microbes' activities that help decompose organic matter. Nutrients leach because there is more precipitation than water evaporates. 

Tree growth also depends on plant adaptations to acidic soil. The soil in the taiga region has a pH value of 3.5-4.5. The boreal forest contains plant species adapted to its icy conditions².

Unfortunately, taiga plants are not as diverse as those of other biomes. Coniferous trees are the dominant plants in taiga regions because they are well-adapted to grow in thin, nutrient-deficient soils and withstand extremely cold weather. 

Evergreen conifers are the dominant taiga plants because they can photosynthesize with their leaves in warm temperatures. There are fewer deciduous trees because they must wait until the beginning of the growing season to photosynthesize.

The needle leaves on pine trees have a thick wax coating that helps reduce the moisture lost to evaporation. It helps them survive through the winter when the ground surface is frozen, and their taiga roots can't access water.

If you are interested in the colder regions, check out our list of common tundra plants.

What are indicator species?

Indicator species are animals, plants, and organisms that serve as a metric for environmental conditions. The existence or absence of these species in their biomes could mean the environment is deteriorating. These plants also indicate the groundwater depth, level of humus richness, moisture, soil types, and minerals. 

For example, the presence of moss indicates acidic soil, greasewood indicates strong alkaline and saline soils, and argemone grows in soils with low moisture content. Frogs indicate water pollution; crayfish indicate the quality of freshwater habitats; and northern spotted owls indicate healthy old-growth forests.

List of Common Taiga Biome Plants

Most of the plants in the boreal forest are indicator species. Taiga plants include evergreen conifers, fungi, and some deciduous species that grow in temperate deciduous forests. These plants indicate the boreal forest’s soil type and climate conditions. Surviving other different conditions might be impossible or slightly challenging for these plants. 

Evergreen conifers like larch and tamarack lose their leaves yearly, while spruce trees lose leaves every 8 to 9 years. Deciduous trees in boreal forests lose their leaves in autumn and grow them in spring, allowing them to use less energy during the winter. Some deciduous species in a boreal forest are evergreen shrubs like alder and willow and broadleaf species like aspen and birches.

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Spot the following fauna the next time you walk in boreal forests:

1. Balsam Fir (Abies balsamea)

Balsam fir is a tall, large tree that can reach 30 m high and extend narrowly at the top as it grows. It is a taiga plant native to the boreal forests stretching across central and eastern Canada and other places in northern America. Its shiny, dark green leaves are needle-shaped and can grow up to 4 cm long. The balsam gray tree bark has sap blisters all over it. 

Balsam fir is part of the pine family. It thrives in moist, well-drained, and acidic soils. The flower buds turn into hardened cones ranging from red to purple to bluish-green. Once they are ripe, the cones break into pieces. Sometimes, people use balsam fir as a Christmas tree because its needles last a while.

2. Dahurian Larch (Larix gmelinii)

Next on our list of taiga plants is the dahurian larch. It is part of the pine family. The deciduous tree is native to eastern Siberia, growing on elevations 3500 ft above sea level. You will find it in the boreal forest from the Pacific coast to a southwestern limit around Lake Baikal and a northwestern one near the lower reaches of River Yenisei. The taiga biome also extends towards Korea and Manchuria. 

Dahurian larch produces cylindrical cones about 1 inch long. They open into ten to sixteen glossy, light brown scales. Like all deciduous trees, its leaves turn yellow and shed in the autumn. Dahurian larch prefers moderately and slightly acidic soils.

3. Jack Pine (Pinus banksiana)

Jack pine or scrub pine is a coniferous tree native to North Canada and the Great Lakes region of the United States. It has other names like scrub pine, gray pine, and Banksian pine. Its trunk has a circumference of 50 cm and grows up to 20 m high.

Young jack pine’s thin bark is reddish-brown and gray; it turns dark brown as it reaches adulthood. It has evergreen needle leaves in bundles of two. Each needle edge is about 2 to 4 cm long, with little teeth and sharp points. 

The seed cones of the jack pine plant are a yellowish-brown 80-scale structure 3-7 cm long. They are often elliptical, conical, or asymmetrical and usually point forward. The cone opens when exposed to heat from direct sunlight or a wildfire.

Overall, the plant has a scrubby appearance. It thrives in nutrient-poor soil, providing white-tail deer with saplings, porcupines with barks, and snowshoe hares with young seedlings. Furthermore, jack pine is a crucial timber. We use it to produce pulpwood, telephone poles, fence posts, and support beams for watersheds.

4. Bog Rosemary (Andromeda polifolia)

Bog rosemary grows in boggy habitats in the boreal forests of northeastern North America, northern and central Europe, and northern Asia. It thrives in cold winter and acidic soil and can reach a maximum height of 60 cm.  

Bog rosemary has leaves resembling true rosemary leaves (Salvia rosmarinus). They are about 3 cm long. It produces urn-shaped pink flowers, which grow in clusters. The flowers bloom from May till September. The bog rosemary plant is a unique species in the boreal forest. It is a potent poison filled with andromedotoxin. Animals avoid feeding on the plant.

5. Purple Pitcher (Sarracenia purpurea)

The purple pitcher plant belongs to the pitcher family of carnivorous plants. It has green leaves with purple veins. It feeds on spiders, tiny frogs, mites, and other insects, and it attracts them with the water and nectar it collects on its upward-facing pitcher-shaped leaves. 

The insect gets caught in the hairs on the leaves, trapping them until they fall into the collected water pool. The water pool contains enzymes that help the plant digest them. Purple pitcher’s pollinator is the Pitcher Plant Fly. The fly’s larvae live in the fluid of purple pitcher leaves and eat some of the trapped insects.

The plant prefers the soil in a boreal forest. You will find it in meadow-like opening areas in a pine forest and on the forest floor in marshes and wetlands. The purple pitcher is dormant from fall till spring before shedding yellow leaves as the flowers emerge in spring. There is a deep-maroon flower at the edge of each branch. 

It is best not to remove the plant from the taiga biome because it has strict growing conditions. It requires total sunlight exposure during the growing season. Also, avoid cold winds and excessive watering.

6. Fireweed (Chamaenerion angustifolium)

Fireweed is a perennial wildflower in the primrose family. It got its name from being the first plant to appear in a burned area. Fireweed propagates quickly and overruns an area with poor soil and a cold climate. It grows from 4 to 6 feet high, with leaves scattered along its stems.

Its leaves have circular veins that do not end at the edge of the leaves. The plant grows a cluster of pink-rose-purple flowers at the top of the stems from June to September. The flowers sit on top of a long cylindrical seed capsule. These capsules have silky hairs at the end. 

Fireweed is one of the flowering plants in boreal forests with the most seeds. A single plant can produce 80,000 seeds. Native people used the plant’s leaves to brew tea and its shoots as vegetables because they contain high levels of vitamins A & C. Fireweed’s flowers produce rich nectar used as honey.

7. White Spruce (Picea glauca)

White spruce is one of the many pine trees in the boreal forest. It grows over 40 feet tall and 10 feet wide. Its evergreen needles are about 2 cm long. The needle colors range from bluish-green to green, with a white, waxy layer.

The tree bark is grayish-brown. You will find white spruce in boreal forests, starting from the Great Lakes and moving to the Arctic tree line. The plant survives all seasons in the boreal forest but thrives best under freezing temperatures. 

White spruce trees provide habitats for many birds, mammals, and other species in the taiga biome. They are also a significant source of construction timber and paper-making materials in Canada. The evergreen tree is susceptible to various diseases and insects, such as stem rusts, spruce sawflies, spruce budworms, spider mites, and bagworms.

8. Wild Sarsaparilla (Aralia nudicaulis)

The wild sarsaparilla is a member of the ginseng family with compound leaves- single-leaf stalks about 30 to 60 cm long. The stalk splits into three stems holding 3-5 oval and toothed leaves.

The leaves of the deciduous species emerge bronze in spring, change to green in summer, and become yellowish-red as winter temperatures increase. In late July, their flowers grow into edible berries that black bears, chipmunks, and red foxes survive on. 

Native people used the wild sarsaparilla plant roots to brew bitter tea to treat stomach upset, toothache, sore throat, and heart pain. They also used the fruiting stalk to induce lactation.

9. Sphagnum Moss (Sphagnum)

Another plant in the taiga biome is sphagnum moss, also known as peat moss. It can easily be found in bogs in North American taiga. The best growing season is in warmer climates. It grows up to 50 cm long, forming a thick mat in waterlogged areas. 

Sphagnum moss doesn't have roots or produce flowers. Its stems and leaves have large dead cells, allowing it to retain much moisture. The moss requires a lot of nutrients, so other plants need more nutrients. 

Peat moss reproduces through gametophytes, and sporophytes are produced on gametophytes. It sheds after producing spores. New plant life can emerge from these spores when scattered in the dry season.

10. Tamarack Larch (Larix laricina)

Tamarack larch, also known as eastern and American larch, can grow up to 80 inches tall and 50 inches wide. This deciduous species produces 2-inch-long light brown pine cones. It only produces seeds once it's ten years old. 

You will see it in central and eastern Canada, northeastern United States, and central Alaska. The tree's needles grow in clusters of 10 or 20. During fall, the soft and flexible needles turn yellow before falling off. In adulthood, the bark turns reddish-brown and becomes scaly. Tamarack larch is the only coniferous plant in Minnesota that sheds its leaves.

11. Scots Pine (Pinus sylvestris)

Lastly, on our list of taiga plants, we have Scots pine. It is a fast-growing pine tree that can reach a maximum height of 40 m. It is the only pine tree native to Great Britain. The crooked tree bark has an orange tinge at the top. Its bluish-green pine needles are intertwined fascicles of 2 growing about 3 inches long. 

Scots pine needles retain moisture and provide resistance against wind, reducing the risk of the tree falling. It is not a fruiting plant. The cones on the tree are about 2 inches long. Scots reproduce via their male and female reproductive structures, which grow on top of each other.

Conclusion 

The boreal forest has much more snow cover than other biomes, especially when it is not a closed-canopy boreal forest. The constant ice and moisture presences drain the soil's nutrients, making it difficult for taiga plants to survive. The plants mentioned earlier adapted to the harsh environments. 

We didn’t mention other taiga plants like Korean pines, Siberian stone pine, Norway spruce, white pine, feather moss, and cloudberry. We must practice sustainable forest management because human activity degrades taiga boreal forests worldwide. Protecting the taiga biome and its plants is a step towards preventing climate change.