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.

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.

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.

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.

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.

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.

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.

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.

Common passionfruit (Passiflora edulis) is a vine species that produce fruit and is native to Brazil and Paraguay. It is useful for its edible fruit, which is sweet and eaten raw or juiced. Its flowers are showy too.

Chinese hibiscus is a small flowering tree. Its fragrant flowers are well known the world over, leading to many cultivated variants. Chinese hibiscus is the national flower of Malaysia and is featured on Malaysian coins. Although the Latin name, Hibiscus rosa-sinensis, means “the rose of China,” it is not related to true roses.

Because of its prolific blossoming, which can blanket the tree canopy and provide abundant shade, the southern silky oak is a good tree for parks. Its resplendent flowers attract bees, butterflies, and birds. Prior to the invention of aluminum, its wood, which is resistant to wood rot, was frequently used for external window joinery.

Coffee senna (*Senna occidentalis*) is a perennial shrub that prefers warm and humid environments. It is sometimes considered an invasive weed that grows in open woodlands, waste areas, and roadsides. It blooms in spring with yellow flowers, followed by brown fruit in late summer and early fall. Seeds can be used as a coffee substitute, although it does not contain caffeine.

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 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.

The chinaberry tree is considered an invasive species in many areas because of its tendency to grow into impassable thickets and crowd out other plants. The entire chinaberry tree is poisonous to humans and many other animals, although cows and some birds have no problems eating the fruit.

Despite its name, indian shot is a flowering perennial plant native to Central and South America. It has been naturalized in other parts of the world and has become a popular garden plant known for its large decorative leaves, fiery red blooms, and ease of cultivation. It is a traditional minor food for indigenous peoples of the Americas.

Red frangipani (Plumeria rubra) is a deciduous shrub or small tree native to Central and South America. It is widely cultivated as an ornamental plant in tropical and subtropical climates. All parts of the plant are toxic when ingested due to their high alkaloid content.

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.

Although the yellow trumpetbush have beautiful and bright flowers that can be pleasing to look at, this plant is considered an invasive weed in multiple countries. A native of the southern United States, Mexico, the Caribbean, Peru and Ecuador, this plant is often found on roadsides, riparian areas, disturbed sites, and other wasteland areas.

Woman's tongue (Albizia lebbeck) is a deciduous tree that can grow to 30 m tall. It has a rounded canopy and gray, rough, cork-like bark. Blooms in spring with greenish yellow flowers. Produces long hanging seed pods. Invades pine lands and hammocks, disrupting the natural flora and fauna. The wood is naturally termite resistant and is often used in furniture making.