Top 10 Toxic Flowers for Tet You Should Be Cautious Of

Azaleas are characterized by being bushy and large (rarely), with the smallest species reaching heights of 10 - 100 cm, while the largest, R. giganteum, can grow as tall as 30 meters. The leaves are arranged in a spiral, and can range from 1 - 2 cm up to over 50 cm, with the exception of R. sinogrande whose leaves can reach 100 cm in length. Azaleas can be evergreen or deciduous depending on the species. Some varieties have leaves covered in scales or fine hairs on the underside. Famous for their large clusters of flowers, some species grow in mountainous regions with smaller leaves and flowers, while others are tropical and parasitic. Azaleas are known for their diverse colors, with woody stems and grayish branches. They are commonly seen in highland regions and are now popular as potted plants for interior decoration.

However, few are aware that beneath their delicate beauty lies a danger: the leaves and nectar of azaleas are toxic. Ingesting their green leaves can cause a burning sensation on the lips. The flowers contain toxins such as andromedotoxin and arbutin glucoside. All parts of this plant are poisonous, making it essential to avoid any contact with it. The first symptoms of azalea poisoning include nausea, fatigue, difficulty breathing, drooling, and vomiting. Additionally, the poisoned individual may experience dizziness and imbalance. Just 100 - 225 grams of azalea leaves is enough to cause severe poisoning in a child weighing 25 kg. If poisoning occurs, move away from the flower, get to a well-ventilated area, and seek immediate medical attention.

Peace Lilies typically grow in clumps, are perennial, and have short stems. The leaves grow densely close to the ground, large and oval, tapering to a point at the top, with heart-shaped bases and long, curved petioles that droop downward. The leaves are glossy green with distinct light green veins. Red Peace Lilies symbolize good fortune, while pink ones are associated with prosperity. These heart-shaped flowers are also linked with love and connection. With proper care, Peace Lilies can live for many years. Peace Lilies carry many symbolic meanings, with green leaves representing hope and vitality, and the red flowers embodying passion and sincere affection.

In addition, Peace Lilies have strong Feng Shui significance. Peace Lilies are believed to attract luck, wealth, and prosperity to their owners. This is why they are widely cultivated. Furthermore, growing Peace Lilies indoors helps purify the air, removing harmful substances like formaldehyde and xylene. The flower clusters are small, borne on long, curved stems. The bracts are a bright red, heart-shaped with visible green veins. Both the leaves and red flowers are toxic. Ingesting them can cause mouth pain, swelling, and blisters, and consuming more can lead to hoarseness and difficulty swallowing.

Oleander (scientific name: Nerium oleander) belongs to the Apocynaceae family and has over 400 species found worldwide. Oleanders thrive in warm subtropical regions and are commonly used as ornamental plants in parks and along roadways. They are drought-tolerant and can withstand occasional frost down to -10°C. Oleander flowers are strikingly beautiful and come in a variety of colors including white, pale pink, deep pink, reddish-orange, and purple-red, and can be either single or double blooms. The pink-flowered variety is the most common, with a light fragrance. Due to these qualities, Oleanders are popular as decorative plants.

In addition to their aesthetic value, Oleander flowers have medicinal properties. For instance, the leaves contain glycosides such as oleandrin (neriolin), neriin, adynerin, and neriantin. Neriolin is used as a heart medication to treat heart failure, shortness of breath, and swelling caused by heart failure. Compared to digitalis or digoxin, neriolin has the advantage of being resistant to digestive enzymes, is quickly excreted, and does not accumulate in the body. However, Oleander also contains the dangerous compound strychnine, and even chewing a small portion of the leaves can be harmful to children, while chewing 10-20 leaves can be fatal to adults.

Lilies, also known as Lilium or True Lilies, are considered one of the most beautiful and popular flowers worldwide. They come in a variety of colors, including yellow, white, orange, red, and pink. Most of the lily varieties found in Vietnam today originate from Western countries like the Netherlands, France, and New Zealand. These varieties are available in a range of colors and types to meet the needs of flower enthusiasts. Known for their elegance and beauty, lilies symbolize virtues such as beauty, purity, and pride, as well as love and fidelity. This is why lilies are often given to mothers, lovers, and are commonly used in celebrations such as graduations and grand openings.

Lilies are especially favored during the Tết holiday for their stunning colors, remarkable fragrance, and long-lasting bloom. Not only are they beautiful, but their fragrance also helps purify the air in the home. However, their strong scent can stimulate the nervous system. When used in moderation, their fragrance brings relaxation, joy, and comfort. On the other hand, excessive exposure can lead to fatigue, headaches, and difficulty concentrating. While the scent of lilies is not toxic, if many lilies are placed in a closed room, their intense fragrance can deplete the room's oxygen, leaving those inside feeling drained and uncomfortable.

Bird of Paradise originates from the tropical climates of Southern Africa and the Americas. With a tall, sturdy trunk and no branches, it is perfect for tall flower vases. The rigid petals fan out dramatically, resembling a warrior showcasing its strength. The leaves are elongated, oval-shaped, with long, narrow stems and a deep green color, somewhat similar to taro leaves but smaller and tougher. These leaves form a fan shape and remain green throughout the year. The flowers bloom on tall stems that rise above the leaves. A truly beautiful Bird of Paradise flower should have petals that resemble a bird's head, crest, and beak.

Bird of Paradise is unique in structure, featuring three long, bright orange petals and three blue-violet petals, surrounded by dark blue sepals. This makes it a highly sought-after ornamental flower. However, the flower, often referred to as the 'Bird of Paradise,' contains toxic compounds that can harm the digestive system. If ingested, these toxins can damage the intestines, leading to diarrhea. In addition, prolonged contact with the petals can cause dizziness, nausea, and discomfort. Therefore, when taking photos with this flower, it's best to avoid lingering too long and refrain from picking or smelling the flowers, as it may cause unpleasant symptoms.

Tulip flowers are often bright and colorful, with a bell-like or star-shaped structure that is perfectly symmetrical. Each tulip bloom has six petals, which can be smooth, frilled, or ruffled. Tulips can be single or double-flowered. These flowers are among the most recognizable and beloved in the world. Tulips have a unique and distinctive beauty that evokes a sense of calm. They are not overly elegant, romantic, large, or small — they strike a perfect balance.

Despite their beauty, the bulbs of tulips contain a toxin called tulipene. Ingesting this toxin can cause dizziness and nausea. Tulips are commonly grown in Da Lat and other cooler regions of Vietnam. However, they are highly toxic, so caution should be exercised if children handle or play with them, especially the bulbs. In case of poisoning, seek immediate medical attention and take the affected person to the nearest healthcare facility.

Bồng Bồng is a perennial herb that grows between 1 and 3 meters tall. Its leaves appear at the top, and the stem often shows scars from fallen leaves. The narrow leaves wrap around the stem and are 20 to 35 cm long and 1.2 to 4 cm wide, tapering to a pointed tip with veins running through them. The tubular flowers, 20 to 25 cm long, are blue on the outside and white inside, grouped in clusters of one to three. These flowers form a 40 cm or longer long spike, with branches extending out 10 to 20 cm. The fruit is a round berry, about 10 to 15 cm in diameter, containing one or two seeds. It blooms between February and April. In Vietnam, Bồng Bồng flowers are found in coastal provinces and islands, where they are often used for decoration during the Lunar New Year.

Although this plant is toxic, it is also used in traditional medicine under strict regulation. It can be used to treat dysentery, relieve joint pain, and heal wounds, ulcers, and sexually transmitted diseases. The plant's resin, when mixed with honey, is applied to mouth sores. It can also be used to numb toothaches by packing it in cotton and placing it in the cavity. However, the sap from Bồng Bồng is highly poisonous in large doses, causing headaches, dizziness, nausea, fever, rash, weakness, and in extreme cases, unconsciousness and difficulty breathing. Visitors are advised to avoid handling this plant to prevent exposure to its toxic sap.

Narcissus flowers originally hail from Japan and China and are often planted during the Lunar New Year for their stunning beauty and fragrant aroma. They are also found in Mediterranean countries, parts of Africa, and other regions in Asia, mostly grown for decorative purposes. Some places still use the bulbs for medicinal purposes, but caution is required as they are toxic. In Vietnam, fewer people cultivate Narcissus or use the bulbs for medicine in recent years. The flowers feature pristine white petals, symbolizing purity, and yellow centers, offering a gentle fragrance that lingers throughout the New Year festivities. This flower is considered a symbol of elegance, repelling evil spirits and bringing peace and good fortune to the household.

The Narcissus plant has a bulb resembling an onion and slender, garlic-like leaves arranged in pairs. The flowers have six petals, with a cup-shaped structure at the center that is pale green in color. There are two main varieties: one with white petals called the “jade cup with silver petals” and another with yellow petals known as the “jade cup with golden petals.” However, it is important to note that the bulbs of these flowers are highly toxic, and consuming them in large quantities can cause dizziness, vomiting, convulsions, and diarrhea. Many people mistakenly confuse the Narcissus bulb with an onion bulb, leading to poisoning.

Bellflower Orchid, also known as Lily of the Valley, is a member of the Ruscaceae plant family. This species is native to the temperate regions of the Northern Hemisphere, including Asia, Europe, and North America. The Bellflower Orchid is a perennial herb that forms dense clusters, spreading its roots underground. The plant grows to about 15–30 cm tall with leaves ranging from 10 to 25 cm in length. Its flower stalks hold 5 to 15 white (rarely pink) bell-shaped blooms, each 5-10 mm in diameter, with a sweet fragrance. The Bellflower typically blooms in May, bringing the warmth of spring, and symbolizes the return of joy. These tiny, delicate flowers are also a symbol of returning happiness, making them popular during festive celebrations like the Lunar New Year.

However, the Bellflower Orchid is a toxic plant. Medicinally, its leaves and flowers contain compounds like Convallimarin and Convallarin, which are beneficial for heart health and have been used in medicine for centuries. But in excessive doses, these compounds can be poisonous, leading to poisoning in both humans and animals. All parts of the plant are toxic, so while ingesting a small amount of the flowers may not cause harm, eating larger amounts can lead to symptoms like nausea, mouth pain, stomach ache, diarrhea, and even convulsions. The heart rate may slow or become irregular.

Hydrangea is widely cultivated in Da Lat, with large leaves and clusters of beautiful flowers in shades of pink, white, and purple that bloom at the tips of the branches. Many families in the area grow hydrangeas as ornamental plants in their homes. While most hydrangeas are naturally white, the flower color can change depending on the soil's pH level. Initially white, the flowers gradually turn blue or pink, depending on the soil's acidity. This flower, originally from Japan, features thin petals that tightly cluster together in bunches, symbolizing unity, gratitude, and sincere emotions toward someone.

Hydrangeas are woody shrubs that thrive in shaded, moist environments. These perennial plants have opposite leaves arranged along the stems and are known for their flowers, which start white and gradually shift to blue or pink. There are several varieties of hydrangeas available, with the most common ones in Vietnam transitioning from white to blue, then purple, and eventually fading. However, all parts of the Hydrangea plant are toxic and can cause poisoning if ingested. Symptoms of poisoning include skin irritation, nausea, weakness, and sweating. In severe cases, it can lead to coma, convulsions, and even circulatory failure.