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.

Sisal (Agave sisalana) is a succulent plant whose yellow flowers bloom along a stalk rising up to 9 m tall and have an unpleasant scent. The flowers, stalk, basal rosette and sap of this plant are edible. Plant in full sun outdoors or place in a bright, sunny location indoors.

Royal poinciana (Delonix regia) is also known as the “peacock tree” or the “flamboyant tree.” It’s a Madagascar native and is known for its brilliant crimson or red-yellow flowers. It grows exceedingly fast, reaching its maximum height of around 12 m in a short amount of time.

Yellow oleander is extremely toxic and many cases of accidental poisonings have been recorded. The toxic oils found in this plant are sometimes used in pest control measures. However, the Cascabela thevetia does have significance in some religious ceremonies, specifically the worshiping of Shiva, a Hindu deity.

Apple of Sodom, or Calotropis procera, is an extremely poisonous plant. The fruit of this plant ripens and bursts, causing the seeds to scatter. In Jamaica, the fibers inside of the fruit are collected and used to stuff pillows.

Solanum campylacanthum is a robust, spiny shrub known for its angular, curved thorns and lush, broad leaves. Its dainty flowers bloom into yellow berries, offering a stark contrast against the greenery. Adapting to survive in arid regions, solanum campylacanthum's thick foliage provides shade, conserving moisture for resilience against dry climates.

The century plant, contrary to its name, only lives about 20 -30 years. The name comes from the fact that it only blooms once during its entire life. Near the end of its lifespan, the century plant sprouts a large stalk that can reach 9 m high and unveils yellow flowers. Most parts of the plant are useful; the tough leaf fibers can be woven into mats or ropes, and the moisture-laden contents are used to create various alcohols.

Blue jacaranda (Jacaranda mimosifolia) is a plant species native to southern South America. Blue jacaranda grows in many cities around the world. Pretoria, South Africa is known as the Jacaranda City. The blue jacaranda is often referenced in songs and literature.

The castor bean is important for its oil which is used as a lubricant, biodiesel ingredient, and rodent repellent, among other applications. The plants are now commercially planted globally, with India producing nearly 75% of the world's castor oil. Castor beans cannot be eaten because they contain a potent poison that's released if the seed is broken.

White leadtree (Leucaena leucocephala) is a small tree native to Mexico and Central America. Planting white leadtree makes the soil fertile as other Legumes do. It has been also used for livestock feed and firewood. This tree is also called a "miracle tree" for its many uses.

Senna siamea (Burmese: မယ်ဇလီ, mezali; Thai: ขี้เหล็ก, khilek), also known as Siamese cassia, kassod tree, cassod tree and cassia tree, is a legume in the subfamily Caesalpinioideae. It is native to South and Southeast Asia, although its exact origin is unknown. It is a medium-size, evergreen tree growing up to 18 m with yellow flowers. It is often used as shade tree in cocoa, coffee and tea plantations. In Thailand it is the provincial tree of Chaiyaphum Province and some places in the country are named after it. Leaves are alternate, pinnately compound, with slender, green-reddish, tinged axis and 6 to 12 pairs of leaflets on short stalks, rounded at both ends.

Parthenium hysterophorus or santa Maria feverfew is also called famine weed. It is an invasive weed that can disrupt the health of crops, pasture, livestock, and humans. A substance in the plant, called parthenin, is highly toxic and can cause dermatitis and breathing difficulties in humans and animals.

Golden wonder tree is a deciduous tree with a height ranging from 2 to 15 m, fast-growing with a leafy canopy.

Golden dewdrops (Duranta erecta) is an ornamental sprawling shrub commonly found in subtropical and tropical gardens all over the world. Its gentle purple blossoms are often visited by butterflies and hummingbirds. Golden dewdrops is considered a weed in Australia, South Africa and certain parts of East Asia.

Bermuda grass is a grass that can be found all over the world. It is used in temperate regions as lawn grass, pasture grass for grazing, and, popularly, as a sports field lawn. This fast-growing plant is considered invasive in many parts of the world. In India, bermuda grass is also used in Ayurvedic medicine.

Jimsonweed (Datura stramonium) is a species of nightshade plant native to Central America which is considered an invasive species in more temperate climates. It can be toxic if ingested in significant quantities. It has a distinctive, strong smell. The jimsonweed gets its common name from Jamestown, Virginia, where soldiers ingested the plants exhibited altered mental states afterward.

Blue fescue (*Festuca glauca*) is a clump-forming ornamental grass that is an evergreen perennial. Blue fescue is often planted for ornamental groundcover, but can become a weed if not carefully controlled. The Latin name Festuca glauca means "pale blue-grey."

Mexican marigold (Tagetes minuta) has become naturalized around the world ever since Spanish colonization. It needs full sun to flourish, and planting it around your garden will resist deer, yet attract butterflies and hummingbirds for you. People with sensitive skin should avoid touching it as its irritant sap can cause contact dermatitis.

Thorny olive (Elaeagnus pungens) is a flowering shrub native to Asia. Thorny olive is also commonly called silverthorn. In the United States, thorny olive is planted ornamentally in landscaping in the southeastern region. Thorny olive grows in variable temperate conditions, and it attracts birds.

Silverleaf nightshade (Solanum elaeagnifolium) is a common weed that grows throughout North America, South America, and Africa. In South Africa, it is called "Satan's bush". Ingestion of silverleaf nightshade is thought to be toxic to horses.