Podcast
TIL: Plants
Hosted by TIL · EN
Learn about plants. Every day we highlight a plant, along with its origin story and interesting facts.
21episodes
Episodes
Newest firstAll episodes
Calothamnus Quadrifidus: The One-sided Bottlebrush
Mar 4, 2024Tap to summarizeCalothamnus quadrifidus, commonly called the One-sided Bottlebrush, is a species of plant in the myrtle family, Myrtaceae, native to Western Australia. It is an evergreen shrub, commonly found in sandy and rocky soils of coastal plains and hillslopes. Originally described by botanist Jacques Labillardière in 1806, this plant was first collected in 1801 during the French expedition led by Nicolas Baudin. The peculiar genus name "Calothamnus" derives from Greek kalos, meaning beautiful, and thamnus, meaning shrub. An appealing sight in any garden, the One-sided Bottlebrush can grow to about 3 meters in height, boasting needle-like leaves and long, cylindrical flowers that radiate a bright red colour. What sets it apart is the unique arrangement of its flowers on one side of the stem, which gives it its common name. Flowering between late winter to early summer, the showy flowers of this shrub attract native nectar-feeding birds and insects, making it an excellent choice for wildlife gardening. Interestingly, it also has fire-resistant properties and has the ability to regenerate after forest fires, growing from a lignotuber. The One-sided Bottlebrush has found use among the local Aboriginal people as a source of food, drink, and medicine. The blossoms, when soaked in water, release a sweet nectar, which can be consumed as a refreshing drink, while the hardwood of the stem is used to make spears. The plant also serves a cultural significance as it is considered a symbol of the beauty and resilience of Western Australian flora.
Transcribe →Liriodendron Tulipifera: The Tulip Tree
Mar 3, 2024Tap to summarizeLiriodendron Tulipifera, better known as the Tulip Tree, is a fascinating and unique plant species. Its most common name originates from the flower it produces, which bears a striking resemblance to a tulip. Other colloquial names include Yellow Poplar and Tulip poplar, even though it's not related to the poplars. The Tulip Tree is indigenous to the eastern regions of North America. Its presence dates back to prehistoric times, with fossil records showing that it was widespread throughout the Northern Hemisphere and lived at least 135 million years ago. Over time, ice ages and changing climates reduced its range. This plant is easy to recognize due to its unique leaf and flower structure. Growing up to 190 feet tall with a trunk diameter of up to 10 feet, the Tulip Tree holds its place among the largest species in the Eastern United States. It has a straight trunk, and branches that form a rhythmic pattern, with four-pointed leaves that are surprisingly symmetric. The leaves tend to turn yellow in color during the fall. The tree produces large, colorful flowers that look like tulips, hence the name. These greenish-yellow flowers contain an orange band at the base and are usually spotted high in the tree during late spring. Despite their beauty, the flowers are not just for show. They produce large quantities of nectar, making the tree a popular destination for bees and other nectar-seeking insects. Liriodendron Tulipifera wood is lightweight, soft, brittle, and very easily worked, which makes it a valuable resource for the production of musical instruments, furniture, and wood pulp. Native Americans even used the tree's bark for its purported medicinal properties to treat fevers and inflammation. Growing at an accelerated rate, the Tulip Tree can gain an additional 24 inches every year, leading to a notably quick enhancement in landscape presence. This rapid growth, coupled with its resistance to disease and insects, makes this species a favored choice for ornamental planting.
Transcribe →Tillandsia Xerographica: The King of Air Plants
Mar 2, 2024Tap to summarizeTillandsia Xerographica, famously known as the King of Air Plants, stands out due to its unique, spiraled rosette feature, and'silver' appearance. Its Latin name, 'xerographica,' is derived from the Greek words 'xeros' meaning 'dry' and 'graphia' meaning 'writing,' a tribute to its dry habitat and unique leaf structure. It is a species of bromeliad and an epiphyte, meaning it grows upon other plants for support while absorbing moisture and nutrients from the air. Native to southern Mexico, El Salvador, Guatemala, and Honduras, these plants are found growing in regions where they are exposed to intense sunlight, very little rain, and lots of dew and fog. Its mesmerizing, spiraled rosette appearance is due to its large silvery-gray leaves that seem to curve outward and spin around the plant center, making it the centerpiece of any air plant collection. Mature plants can grow up to three feet in diameter. Its uniqueness also lies in its capability to bloom. When it does, it produces a tall, multiflowered inflorescence with yellow, red, and purple flowers that can last upward to 6 months. An interesting aspect of the Tillandsia Xerographica is its resilience. Despite living in harsh climates, they are not only able to survive but thrive. Due to their ability to draw water and nutrients from the air, they require minimal care, making them favorite houseplants. They are also environmentally sustainable, as they don't require soil to grow, hence no deforestation or harm is caused in their harvesting. However, due to illegal over-collecting, the natural populations of these plants have declined severely and it now considered an endangered species under CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora). Today, most Tillandsia Xerographica available for purchase are nursery grown and not harvested from the wild.
Transcribe →The Fairy Duster: Calliandra Eriophylla
Mar 1, 2024Tap to summarizeThe Fairy Duster, scientifically known as Calliandra Eriophylla, is a perennial shrub native to the deserts of Southwestern United States and Mexico, predominantly in the Sonoran and Chihuahuan Deserts. Classified under the Fabaceae family, its origin dates back to prehistoric times, adapting for survival in arid climates. Fairy Dusters often serve as a critical aspect of the desert ecosystem, providing nectar in the early spring for hummingbirds, butterflies, and bees. This availability of nectar in early bloom season when other sources are scanty often makes this plant a lifeline for pollinators. A Fairy Duster plant typically grows to a height of 0.3 to 1.2 meters. It has small, compound, gray-green leaves and delicate feathery blooms that appear in clusters. These flowers usually have a vivid pink hue and are staminate, with the long stamen giving the appearance of a powder puff or fairy duster, hence the plant’s common name. The plant has adapted to survive in harsh desert conditions, going into an inactive state during periods of drought. With its roots that extend deep into the ground to tap into waters not accessible to other plants, it stays resilient in extreme heat and aridity. Interestingly, the beans produced by the Fairy Duster are edible once cooked and have been consumed by Native American tribes for centuries. It is also used for making traditional medicines and an ingredient for powerful, fast-acting hallucinogens. Besides its ecological significance, the Fairy Duster is also popular in landscaping because of its bright flowers and minimal maintenance needs. It's often used in xeriscaping, a type of landscape design intended to reduce the need for irrigation, emphasizing the beauty of naturally arid landscapes. With its ability to attract pollinators, this plant also aids in the survival of other plant species in the area, making it a fascinating addition to biodiversity.
Transcribe →Rafflesia Keithii: The Stinking Corpse Lily
Feb 29, 2024Tap to summarizeRafflesia keithii, also known as the Stinking Corpse Lily, is an extraordinary flowering plant known for its massive size and foul odor. Named after Henry Keith, former Conservator of Forests in Sabah, its Latin name pays homage to both its size and the person who discovered it. This plant is a native of Borneo, where it was first discovered in the rainforests. This species is endemic to Sabah, in northeast Borneo, specifically near Mount Kinabalu, where it is found on the Serpent's Tongue, or Sabang River's west-facing slopes. Nowadays, this striking organism can be found anywhere from Thailand to the Malaysian state of Sabah and even the Philippines. At first glance, you'll certainly take note of the Rafflesia Keithii's immense size. As a parasitic plant, it lacks true roots, stems, and leaves, having minimal contact with its host tree except for the thread-like filaments that penetrate the tree's tissues. However, it finds a way to grow up to one meter in diameter making it one of the biggest single flowers in the world. The Rafflesia Keithii produces large, five-petaled flowers that bloom infrequently and only remain open for just a few days. The petals, thick and tough, are a vibrant red flecked with white freckles. The center of the flower is a well-like structure containing a disc and spiked column. But what makes it more known is not only its size but its outrageous stench. The flower excretes a pungent scent similar to decaying meat, which has earned it the nickname "corpse flower". This odor attracts carrion flies, which then land on the sticky surface of the central disc. Trapped by the spikes around the disc, the flies are forced to crawl past the stigmas and anthers, pollinating the flower in the process. This foul-smelling strategy is a fascinating example of Mother Nature's ingenuity. Visiting a Rafflesia Keithii in full bloom is a sought-after experience for botanists and tourists alike. However, due to its sporadic blooming habits and short life span, witnessing the flower in all its glory requires some luck. Conservationists are making efforts to protect this plant, as its population is threatened due to the loss of its rainforest habitat and illegal harvesting. However, its unusual features make it a must-see, reminding us of the incredible biodiversity our planet holds.
Transcribe →Carnegiea Gigantea: The Saguaro Cactus
Feb 28, 2024Tap to summarizeCarnegiea Gigantea, more commonly known as the saguaro cactus, is a species of cacti native to the Sonoran Desert in the southwestern United States and northwest Mexico. It is considered the largest cactus in the United States and has become an emblem of the American Southwest. Saguaros typically grow slowly but have a long lifespan. They take about 15 to 20 years to grow their first foot, and while located in favorable conditions, they can grow to heights of 40 to 60 feet during their 150 to 200-year lifetime. The cactus has a tree-like structure, starting with a single column and growing arms as it matures – some saguaros can sport over 25 arms! The saguaro cactus was first described in 1863 by George Engelmann, who named it after Andrew Carnegie. Although people often associate saguaros with desolate desert landscapes, they're actually a critical part of desert ecology, providing homes and sustenance for a variety of creatures. The saguaro's lifespan is marked by significant stages and phenomena. Most notably, the saguaro produces charming white flowers, Arizona's state flower, which bloom during the night from April to June. The pollination of these flowers is primarily performed by bats, specifically the lesser long-nosed bat. This bat - cactus mutualism represents a fascinating ecological adaptation to the harsh desert environment. Another interesting fact about saguaros is the preservation efforts surrounding them. In Arizona, it is illegal to harm a saguaro, and permits are required to move or sell them. This helps to protect the species and maintain the biodiversity of the Sonoran Desert. The Saguaro National Park in Tucson is specifically dedicated to the preservation of the saguaro ecosystem and is a paradise for cactus lovers, scientists, and photographers.
Transcribe →Dionaea Muscipula: The Venus Flytrap
Feb 27, 2024Tap to summarizeThe Venus Flytrap, scientifically known as Dionaea Muscipula, is among the world's unusual and fascinating plants due to its carnivorous nature. The plant originates from subtropical wetlands on the East Coast of the United States in North Carolina and South Carolina. It's most famously found in boggy areas where the soil is poor in nutrients, mainly nitrogen, which it compensates by digesting insects. It has also been introduced to several regions around the world. The Venus Flytrap is a perennial rosette plant that has 4 to 7 leaves that grow from a short subterranean stem. Each leaf has a hinged midrib forming two lobes, each terminating in 1-3 spikes. The lobes exhibit rapid plant movement by folding closed to trap insects that land on them. Interestingly, the trapping of insects is an energy-intensive process, and the plant is selective when triggering the trapping mechanism: it only closes if two separate regions of the plant are touched within about twenty seconds of each other - a response that confirms an insect's presence and not a single droplet or a piece of dirt. Historically, the plant has been used in love potions and as an ingredient in house protection spells. More recently, some researchers have also studied the possibility of using Venus Flytrap extracts in cancer treatment, citing its potential cytotoxic effects, but there is not enough evidence to substantiate these claims. The plant shares a unique family with the aquatic waterwheel plant and the sundew, and they are protected due to threats from habitat destruction and poaching. The Venus Flytrap, with its peculiar yet appealing features, is often kept as a novelty houseplant and is recognized as a symbol of fascination and curiosity worldwide.
Transcribe →Silver Sword: Argyroxiphium sandwicense subsp. sandwicense
Feb 26, 2024Tap to summarizeArgyroxiphium sandwicense subsp. sandwicense, commonly known as Silver Sword, is a rare and endangered plant native to the Hawaiian Islands. It gets its name from the silver, sword-like leaves it possesses. The origin of the Silver Sword is tied intimately with the unique volcanic habitats of Hawaii. Over millions of years of evolution and isolation, it adapted to thrive in the harsh climatic conditions of the high volcanic slopes. This plant is primarily found in the upper elevations of Mt. Haleakalā on the island of Maui, generally above 7,000 feet. It can survive in various conditions, from volcanic rocks to open grassy slopes, making the Silver Sword a symbol of resilience. The Silver Sword is renowned for its peculiar appearance. It has long, narrow leaves up to half a meter long, that are composed of dense, silver hairs. These hairs serve as a protective coating from the intense sun in its high-altitude home. The plant's most striking feature, however, is its tall flowering stalk. Once mature, it sends up a stalk that can reach up to two meters in height, bearing hundreds of small, purplish flowers. Interestingly, each plant flowers only once in its lifetime of up to 50 years – a strategy known as monocarpic. Argyroxiphium sandwicense subsp. sandwicense is critically endangered due to a combination of factors including climate change, invasive species, and human activities. Conservation efforts have been implemented to protect this unique species, including habitat restoration and pollinator protection. There is significant interest in propagating the Silver Sword in captivity to support reintroductions in the wild. One intriguing aspect of the Silver Sword is its symbiotic relationship with a native Hawaiian honeybee, or nalo meli maoli, which is the primary pollinator of the plant. This unique interaction makes the plant crucial not only to the ecosystem but also to the survival of the native honey bee species.
Transcribe →Cercis Canadensis: The Eastern Redbud
Feb 25, 2024Tap to summarizeCercis Canadensis, more commonly known as the Eastern Redbud trees, first made an appearance in the natural forests of the eastern United States. The tree was "discovered" and categorized by Carl Linnaeus in 1753. Hailed for its spectacular springtime display of deep pink or purple blossoms, the Eastern Redbud has since gone on to become a landscaping staple, brightening up gardens across North America and beyond with its vibrant display of colors and heart-shaped leaves. The Eastern Redbud is a member of the Fabaceae family and can be found flourishing across its native region, from the Atlantic coast to the Midwest and from southernmost Canada to northernmost Mexico. For the most part, these trees prefer well-drained soils and are most abundant in the understory in forests and hedgerows. The tree grows to approximately 20 to 30 feet in height, but its most distinguishing characteristics are the beautifully formed, spreading branches that exhibit heart-shaped leaves. This dense network of branches creates an umbrella of pink blossoms —a showstopping sight when in full bloom from March to May. After the tree's flowers fade, they're replaced by dark green leaves that create an umbrella of shade, making for a lovely and functional addition to any garden or parkland. The Eastern Redbud also produces elongated seedpods, which house the seeds of the next generation of trees. These seedpods are flat and are generally about 2 to 3 inches in length, initially green and turning a brownish-black upon maturity. An often overlooked detail about the Eastern Redbud is that its flowers are edible. They can be eaten in salads or can be pickled and can make for a somewhat surprising and certainly exquisitely colorful culinary addition. The tree, with its perfect harmony of beauty, utility, and sustainability, is a testament to nature’s genius.
Transcribe →Sansevieria Trifasciata: The Snake Plant
Feb 24, 2024Tap to summarizeSansevieria Trifasciata, often referred to as the Snake Plant, is a popular indoor plant. The name "Snake Plant" is derived from its tall, slender, upright leaves that have a snake-like, patterned texture. This plant is alternatively referred to as “Mother-in-Law's Tongue,” due to its sharp margins. Its Latin name, Sansevieria Trifasciata, hints at its visually distinct markings with "trifasciata" translating to "three bundles". This plant is native to West Africa, particularly Nigeria, the Congo, and Senegal. It grows best in dry, semi-tropical regions and favors rocky terrain. Despite its native habitat, the Snake Plant has gained considerable popularity worldwide, particularly in temperate regions, for its resilience and adaptability. It can now be found growing in various households, offices, and indoor public spaces as a popular indoor plant. Sansevieria Trifasciata has thick, vertically growing foliage with sharp, sword-like shapes—hence its alternative name. These leaves are green with patterned, horizontal stripes of a lighter green color, resembling the skin of a snake. Depending on care and environmental conditions, a Snake Plant can grow as tall as six feet, though indoor specimens typically average between one and three feet. One of the most interesting facts about the Snake Plant is its exceptional air-purifying qualities. A study conducted by NASA listed Snake Plants as one of the top houseplants for improving indoor air quality. This is because this plant absorbs toxins through its leaves and produces pure oxygen. Even more impressively, unlike many plants, the Snake Plant continues this oxygen production at night, making it an excellent plant for bedrooms. Snake Plants are also known for their hardiness, they require minimal care and can survive in low light conditions and irregular watering. If that wasn't impressive enough, its stiff, fibrous leaves can reportedly be used to make bowstrings, giving this plant yet another purpose beyond just decoration.
Transcribe →