The hawai'i silversword (Argyroxiphium sandwicense) is a rare and endangered plant of the state of Hawaii in the U.S. It grows on the mountains of Hawaii, and its blooms can reach 1.8 m. Hawai'i silversword's Hawaiian name is "ahinahina", which means "very gray."

Himalayan blackberry produces tasty berries at the peak of the season, but its bounty is offset somewhat by its drawbacks. The canes are covered in aggressive thorns and create impassable thickets. The plant itself is considered a noxious weed in some areas due to its fast-spreading behavior.

Arrowhead plant (Syngonium podophyllum) is a beautiful foliage plant, one of the most popular species of the Araceae family. Due to its air purifying qualities and good looks, arrowhead plant is often cultivated as a houseplant. Every part of this plant is toxic, so it's best to keep it away from kids and pets.

Rosemary is a herb with pale flowers and evergreen leaves. It gives off a distinctive scent and is used in cooking as well as in the making of scented perfumes, soaps, and candles. Rosemary is native to the Mediterranean region where evidence of its use by humans dates back at least 7000 years.

The madagascar periwinkle (Catharanthus roseus) is an evergreen subshrub or herbaceous plant. It has a long history of cultivation. Over the years, many cultivars have been developed, most commonly with the aim of incorporating new colors or making the plant more tolerant to cold.

Spineless yucca (*Yucca gigantea*) is a flowering evergreen shrub. It is evolutionarily related to asparagus, although its appearance does not indicate this fact. Spineless yucca grows in warm climates throughout Central America and nearby islands. When growing spineless yucca as a houseplant, it is important not to overwater the plant.

Florist kalanchoe (Kalanchoe blossfeldiana) originates from Madagascar and has been a popular houseplant since the 1930s. Unlike most other succulents that are grown for their interesting leaves, Kalanchoe blossfeldiana is valued for the colorful flowerheads it produces in autumn and winter. This is the reason it is commonly gifted during holidays, earning it another name - Christmas kalanchoe. It is toxic to pets.

Emerald ripple peperomia (*Peperomia caperata*) is a plant with heart-shaped leaves that is native to Brazil. The Latin name *Peperomia caperata* is an amalgam of two Greek words. The word 'peperi' means pepper, and the word 'homoios' means resembling. Emerald ripple peperomia is related to *Piper nigrum*, otherwise known as black pepper.

Tutsan (Hypericum androsaemum) is related to the more common St. John's Wort. It is native to Europe, Iran, and the Mediterranean region. This fast-growing plant is considered invasive in some countries - particularly in Australia where neither livestock nor any wild animals will eat it.

The common lantana is a flowering plant that grows best in tropical environments. It spread outside the Americas when the Dutch brought it to Europe. The plant is generally regarded as an unwanted weed that reduces biodiversity. Additionally, it is toxic to livestock and harms the output of farmland.

The first tea rose was created in 1867 by Jean-Baptiste André Guillot, who operated his father's nursery in Lyon from the age of 14. The tea rose did not become popular until the Rosa hybrida was cultivated at the beginning of the 1900s in France.

Philodendron hederaceum is an evergreen climbing plant originating from the West Indies. It is a widely cultivated houseplant, famous for its glossy, heart-shaped leaves, hence the common name heartleaf philodendron. It contains calcium oxalate crystals, so it can be mildly toxic when ingested.

Papaya is a fruit-bearing plant that originates from Central America. The fruits are edible and sweet and juicy when ripe. An enzyme collected from the milky sap is used as a meat softener, which if ingested may be toxic. Keeping a papaya plant in your garden will welcome many birds to your landscape.

Common hollyhock (Alcea rosea) is a stalk-flowering plant known for its height and attractive flowers. It regularly reaches head height or beyond - from 1.5 to 2.5 m tall. The presence of common hollyhock in a garden can also attract butterflies and hummingbirds.

The scientific name of the london Plane is Platanus hybrida. It is a deciduous tree that can grow up to 20 to 30 m tall, with foliage and bark similar to that of a sycamore tree. The tree produces large leaves and inconspicuous red flowers in spring, followed by pendulous ball-shaped clusters of seeds. These seeds are loved by purple finches, goldfinches, and squirrels. The london Plane has a high tolerance to pollution.

Baby sun rose (Mesembryanthemum cordifolium) is a succulent species native to South Africa. Baby sun rose is primarily planted for ornamental purposes in gardens and urban spaces. This species is considered fast-growing and is often planted as ground cover in flower boxes and public areas. It can be easily propagated from cuttings and outcompetes weeds when grown in the same area.

The sago palm is said to be a source of sago, a starch and carbohydrate source eaten in certain countries. Great care must be taken, however, because sago palm is poisonous that could cause vomiting, diarrhea and headache, etc. These palm-like plants are more often kept for their decorative value. But make sure that your pet is away from this plant, which could be fatal to pets if consumed.

The fringed willowherb is native to North America and East Asia, but was introduced to North Europe in the 1900s and spread rapidly. It prefers humid places such as in the wetlands or by the streams and ponds, but it can also survive in a variety of habitats such as roadsides and wastelands.

The golden pothos (Epipremnum aureum) is a popular houseplant that is commonly seen in Australia, Asia, and the West Indies. It goes by many nicknames, including "devil's ivy", because it is so hard to kill and can even grow in low light conditions. Golden pothos has poisonous sap, so it should be kept away from pets and children.

The ditch lily is a perennial plant known for its captivating lily-like blooms. Its natural habitats are meadows and forests, but it is also a common garden plant in temperate regions around the world. Each individual flower lasts only a day, but the plant will bloom new ones for weeks. Ditch lily's young buds and flowers are edible either raw or cooked. As a bonus to vegetarians, the flowers contain more fats than most vegetables.